Thursday, March 1, 2012

Hamster General Information (Part I)







  • General Information
    ═════════════════════
    ·         Average Size
    ·         Habitat
    ·         Distribution
    ·         Description
    ·         *Burrowing
    ═════════════════════

    Common hamster (7)





    There are two types of hamsters commonly sold as pets. Most are golden hamsters, also known as Syrian hamsters. These have many hair colors and maybe short- or long-haired. Siberian dwarf hamsters are smaller, with short, greyish-brown hair on top and white hair below. (5)





  • Is a hamster a right companion for you? (A checklist) (9)


    Hamsters may be friendly pets when handled regularly, but some individuals fail to tame well and are prone to biting, especially when first awakened. Golden hamsters tend to be less aggressive than Siberian dwarf hamsters and therefore are probably better pets. With good care, a hamster may live two to five years. (5)





  • Average Size
  • 4 to 5 inches long (9)





  • Habitat

  • Dry places, on steppes, sand dunes, borders of deserts. Common hamster also found on agricultural land and river banks.(7)





  • Distribution

  • Common hamster: Belgium to Lake Baikal in
    Siberia
    Grey hamster: Greece and Bulgaria to borders of Outer Mongolia
    Dwarf hamster: Siberia, Manchuria and northern China.
    Golden hamster: not found in the wild since 1930 but originally ranged from Rumania and Bulgaria through the Caucasus and Asia Minor to
    Iran.(7)





  • Description

  • Common hamster: guinea-pig size, reddish-brown above, black below, white bands on shoulders; very short tail.
    Golden hamster: light reddish-brown above, white underneath. The seven species of grey hamster have mousey or reddish coloured fur and longer tails.
    The dwarf hamster is the smallest, with greyish or buff upperparts, white underparts and a short tail. The golden hamster is the most well-known hamster, having been kept as a popular pet for many years. However, there are about 14 species of hamster, ranging from the guinea-pig sized common hamster to the tiny dwarf hamster, 5 - 10cm in length. They are short-tailed
    rodents, similar in many ways to gerbils and voles.(7)






  • Different Hamster Breeds

  • Hamster Breeds: Syrian, Campbell, Winter White, Roborovski and Chinese





  • Syrian Hamsters (Mesocricetus auratus)

  • Syrian hamsters, also known as Goldens or Teddy Bear hamsters, are the most popular hamsters kept as pets. They are very easy to handle and make wonderful pets for children. They are not social with other hamsters however, and should be kept alone after 10 weeks of age. If caged together, Syrian hamsters can actually fight until they kill each other. Syrian hamsters are nocturnal, and are rarely active during the day. (19)

    Syrian hamsters come in a variety of colors, and they are one of the largest hamsters at a length of 4" - 7" when full grown, depending on the sex. Females can grow larger than the males, which reach only about 6" long. They have a very short tail, large cheek pouches, and small eyes. The average life span of a Syrian hamster is approximately 2 to 2-1/2 years, though they have been known to live as long as 4 years.





  • Dwarf Campbell Russian Hamsters (Phodopus campbelli)

  • Dwarf Campbell Russian hamsters are more social than Syrian hamsters, and they can be kept in same sex pairs or groups of their breed as long as they are introduced at a young age. They aren't quite as responsive to handling as Syrians and may nip if they feel nervous or threatened. They still make good pets; they just require supervision of both child and pet during interactions. Though they are nocturnal, they are often awake for short periods during the day.(19)

    Dwarf Campbell Russians are very small, reaching a maximum size of only 4" as adults. The natural coat color is grayish brown fur on the back with a darker strip of color down the spine, a creamier color on the sides, and a white stomach. Dwarf Campbell Russians can be found in a variety of colors however, due to selective breeding. The average life span of a Dwarf Campbell Russian is about 2 years.(19)





  • Dwarf Winter White Russian Hamsters (Phodopus sungorus)

  • Dwarf Winter White Russian hamsters are similar in behavior to Dwarf Campbell Russians in that they are active during the day and can be kept in same sex pairs or groups. However, they do not have the reputation for biting when nervous, and they are generally very sweet and personable. They are very small and quick though, so they can be a challenge for young children to handle safely.(19)

    Dwarf Winter White Russians come in three colors: Sapphire, Pearl, and a combination of the two called Sapphire-Pearl. Pearl is a white pattern where white hairs are sprinkled throughout the coat, and Sapphire is a purple-gray color. Sapphire Winter White Russians have a gray undercoat, a thick gray stripe along their spines, and an ivory colored stomach.(19)

    Dwarf Winter White Russians are very small and compact, measuring only 3-1/2" to 4" as full grown adults. Because they are so tiny, an aquarium is generally a safer housing choice than a wire cage. The average life span of a Dwarf Winter White Russian hamster is about 2 years.(19)





  • Roborovski Dwarf Hamsters (Phodopus roborovski)

  • Roborovski Dwarfs are another social breed of hamster, and they do well in small same sex pairs or groups if they are introduced at a young age. They are sweet hamsters that do not usually nip. Though they have good temperaments, they are generally better for observation than for handling because of their size and agility. They should only be handled where they will be easy to catch if they jump down from your hands. They are nocturnal.(19)

    Roborovski hamsters are sandy brown with a white stomach, white marks over their eyes, and occasionally a white face. They are the smallest of the most popular hamster breeds, reaching an adult size of only 1-1/2" to 2". The average life span of a Roborovski is longer than any of the other common hamster breeds at 3 to 3-1/2 years.(19)





  • Chinese Hamsters (Cricetulus griseus)

  • Chinese hamsters, also known as Striped hamsters or Chinese Striped hamsters, are not generally social hamsters, but there have been some owners who have been able to successfully house them together. However, it's best to be safe and house them individually. Though they can be aggressive towards each other, they are good-natured towards people and slightly timid, and they rarely bite. They are active during short periods throughout the day, but their most active period is at night.(19)

    Chinese hamsters are often mistakenly referred to as dwarf hamsters. Though at about 4" full grown they are similar in size to other dwarf hamsters, they are actually not true dwarfs. Chinese hamsters have a body type that is similar to a rat or mouse - long and slender. There are two colors of Chinese hamsters. The first, and most common, is an agouti coat with a dark brown back, a black line of fur along the spine, and an ivory colored stomach. The other color is called a "dominant spot," and it is a white coat with spots of color. The average life span of Chinese hamsters is about 1-1/2 to 2 years.(19)






  • *Burrowing
  • Hamsters can really burrow. (14)



    Most hamsters live in dry places such as the edges of deserts, but the common hamster lives among crops, in ploughed fields and along river banks, often swimming. When they are not busy searching for food, hamsters are in their underground burrows.(7)

    The common and grey hamsters have short shallow burrows for use during the summer and deeper ones for the winter. Each burrow is long and branching with several entrances and a number of compartments for nesting, storing food and for 'toilets' - hamsters being very clean animals. Dwarf hamsters live alongside pikas (small relatives of rabbits and hares), and use their burrows and paths.(7)

    Common and golden hamsters are mostly nocturnal; grey hamsters may be seen by day and night during the spring and summer, but are completely nocturnal in the winter.(7)







  • MYTHS AND MISCONCEPTIONS ABOUT HAMSTERS
  • (by HH's Member Christmas_hamster) (22)


    Myth: Syrian hamsters can learn to live together.
    -or-
     ‘My Syrians haven’t fought yet so that means they can live together’.(22)

    Truth: In the wild syrian hamsters only come together to mate when the female is in heat. The female then raises her young but boots them out of her nest as soon as they are capable of living on their own. These young hamsters go off and find their own territory and the cycle repeats itself. Syrians do not live together in the wild so why would they live together in captivity? They are solitary by nature and do not take well to having cage mates. Just because two Syrian hamsters have not fought yet does not mean that they will not fight at some point.(22)

    These fights can lead to injuries, expensive vet bills, stressed hamsters or even death. There is no reason to tempt fate and try to go against nature other than for selfish desires of wanting to keep them together. While they may be upset or confused after being separated, within a day they will be back to their normal selves without a thought about their old cage mate. In fact you may even see them come out of their shell now that they are no longer forced to live in an unnatural social environment.(22)

    Sometimes you hear about a pair of Syrian hamsters that just don’t fight. This does not mean that they are thriving in this situation though. The stress of living together can lower their immune systems, a lot of times you hear about Syrian hamsters living together only to die at a young age or from some sort of illness. This is because when under this constant stress a hamster’s immune system is lowered, thus making them susceptible to other illnesses.(22)

    Myth: Dwarf Hamsters should never be housed together.

    Truth: While dwarf hamsters are not social-dependent animals such as rats or humans, where they become stressed and develop certain stereotypes when housed alone, dwarf hamsters can live with others of their own species. In the wild dwarfs live in small groups or colonies, while those that have their own burrows will often keep their burrows close together for breeding purposes. This means that unlike the Syrian hamster, dwarfs can be kept together. It is highly recommended that pairs or groups be of the same sex so as not to bring on a population explosion.(22)

    Now just because they can live together, does not mean that they will not fight. However there are ways to eliminate the chances of fighting. In order to do this you must look at their environment or in this case - their cage. With pairs or groups you will need to consider things such as cage size, amount of supplies and toys per hamster, among other things with the physical aspect of their cage. The other factor that comes into play when housing multiple hamsters is the individual hamster. Not every hamster will be suited to social life and sometimes a certain pair just cannot get along, much like how you can’t like every person you come across. So while dwarfs may have small arguments or dominance behaviours this does not mean that they need to be separated, even humans disagree from time to time. The rule is usually no blood, no foul. This also applies to Chinese hamsters, though it seems that the incidence of Chinese hamsters needing to be separated may be higher than that of dwarf hamsters.(22)

    Myth: Chinese hamsters are a type of a dwarf hamster.(22)

    Truth: Let’s make this a mini science lesson. Every living organism is organized using a classification system. The basic structure of this classification system includes the: kingdom, then phylum, then class, then order, then family, then genus and then species. So when looking at hamsters using this classification system it looks like this:(22)

    Kingdom: Animalia
    Phylum: Chordata
    Class: Mammalia
    Order: Rodentia
    Family: Cricetidae

    Now before we move on keep in mind that there are many different kinds of hamsters. As we look further using this classification system, you will be able to see just how the different species of hamsters are broken up by genus and then species. There are about seven different genera (plural for genus) that make up this family and they include the following:

    Genus: Cricetulus/ Phodopus/ Calomyscus/ Cricetus/ Mesocricetus/ Tscherskia/ Mystromys/ Calomyscus(22)

    From there you have the different species. For example looking at the dwarf hamster genus, Phodopus, we can then look at the three species of this group:

    Species: campbelli/ sungorus/ roborovskii
    (Russian Campbell/ Winter White/ Roborovski)(22)

    There are only three species of hamsters that fall under the genus Phodopus, meaning that there are only three kinds of dwarf hamsters. Chinese hamsters are not part of this genus however. If we go back and look at the genus, Cricetulus, then we can find today’s domestic Chinese hamster with the species name being:

    Species: griseus

    So all together using this classification system, Chinese hamsters are:
    Animalia> Chordata> Mammalia> Rodentia> Cricetidae> Cricetulus> griseus

    The reason that Chinese hamsters are often grouped with dwarf hamsters is due to their small size and the dorsal stripe that runs down the centre of their back which are characteristics of some of the dwarf hamsters (roborovski dwarfs do not have any dorsal stripes). So while they are closely related they are not a ‘dwarf’ species.(22)

    Myth: There are more than five domestic species of hamsters.
    -or-
     ‘I have created/bought the newest species of hamster.... the black bear hamster!’

    Truth: There are many different nicknames for hamsters these days. Pet stores and some breeders have been seen claiming that they have certain hamsters that are new, rare or better than your average hamster. For example some common names include ‘black bear’, ‘teddy bear’, ‘blueberry’, ‘panda bear’ and there are so many more. However there are only five species of domestic hamsters. They are the Syrian, Winter White Dwarf, Russian Campbell Dwarf, Roborovski Dwarf and Chinese hamsters. Nicknames are made up for hamsters usually to make a certain colour or fur type seem rarer then another hamster of the same species. If it is rare then they feel that they can justify raising the price. These are just nicknames though and do not in any way make the hamsters any better then another of its species.(22)





  • MYTHS ABOUT THEIR BEHAVIOR

  • Myth: Dwarf hamsters are evil [monsters].
     -or-
    Dwarfs enjoy nothing more than to bite a human.(22)

    Truth: Despite popular belief, dwarf hamsters are not the “devil’s creation”. Hamsters in general have a bad reputation for biting, but dwarf hamsters have it the worst. I cannot even count the times I have read this online, heard it from others or have been lectured by pet store employees about the evil dwarf hamster. Dwarfs have this reputation due to some misunderstandings.

    The first thing is, hamsters have really terrible eyesight. However they are not helpless due to this, and have learned how to compensate for their less-than-ideal eyesight. Dwarf hamsters often use their teeth to explore something new in order to figure out what it is. This includes your hand, though keep in mind that nibbles do not usually hurt nor do they draw blood. Also because of their poor eyesight hamsters can easily mistake a finger for an enemy (especially if you wake them up, or pick them up with out warning!) or even as a piece of food. It’s important to always let your hamster know that you are there and to wash your hands before handling your hamster so that your hands do not smell like a tasty treat.

    The second thing that must be considered is that dwarf hamsters are often found to be cage territorial. This is usually only seen in hamsters that are kept in small cages, although hamsters can carry this habit even if their cage is upgraded. This just means that the hamster is feeling territorial over their home. Sometimes this can be worked out but for the most part, their space must be respected. When a hamster is cage territorial this does not mean that they will not be willing to be handled outside of their cage. Using a tube or a cup of some sort for the hamster to climb into while in their cage is a great way to respect their space yet still get them out.(22)

    Myth: Roborovski dwarf hamsters cannot bite because their mouths are too small.(22)

    Truth: Any animal can bite and the Roborovski dwarf is no exception. They have four sharp incisor teeth that are quite capable of drawing blood and pain despite their small size. Don’t be fooled by their small stature. If they feel the need to defend themselves then they most certainly can.(22)

    Myth: All hamsters are nocturnal/crepuscular.(22)

    Truth: In the wild it is found that Syrians and Roborovski dwarf hamsters are in fact nocturnal. Russian Campbell dwarfs are said to be either nocturnal or crepuscular (that is awake at dawn and duck). The other species (Winter White dwarfs and Chinese hamsters) are not quite specified as to when they are most active, though it is obvious that it not only depends upon the species, but upon the location of said animal as to whether they are nocturnal or crepuscular. In the wild they stay in their burrows during the day and at night not only to avoid predators but to avoid the extreme temperatures that befall the desert-like Mideast and Asia habitats that hamsters originate from. It has been recently said that all hamsters are crepuscular, meanwhile before it was that all hamsters are nocturnal, however this is not found to be true in the wild for several species.In domestic settings a hamster being nocturnal vs. crepuscular is going to depend not only upon its species, but also it's environment. Variations in factors such as temperature, seasons, location in the world, light in the room, etc. are going to change a hamsters schedule. So while Syrian hamsters where I live may be seen to be nocturnal, other Syrians in a different part of the world may be crepuscular.(22)

    Although it should be mentioned that some hamsters do (particularly Syrian hamsters) seem to follow a nocturnal routine. It should also be noted that with the use of artificial light in the home, hamsters may have a differing schedule from their ancestors or from those that have more natural light than artificial. (22)

    OTHER

    Myth: Hamsters make great pets for children.
    -or-
    Hamsters are cheap pets. .(22)

    Truth: Hamsters are commonly thought of as a great pet for young children or a great cheap pet. This is not the case though. First of all children typically have an early bed time, meanwhile hamsters are often not up and about until well into the night as they're crepuscular/nocturnal by nature. It is not until the child or teenager can stay up late that they may be able to handle such a schedule. Otherwise they will not see their pet very often, leading them to disturb the hamster during the day or to grow bored of it. Generally hamsters don't like to sit still for cuddles and can be difficult for young children to handle. Many hamsters have been inadvertently squished or harmed in the hands of a young child who did not understand or were incapable of understanding how to handle such a delicate animal. Every child is different and some may be ready for a pet sooner than others, but a child should be mature enough to appreciate and respect the needs of their pets. Under no circumstances should a child be given the sole responsibility of their pet, an adult should be supervising the child's interactions with the hamster at all times and the responsibility should ultimately fall upon an adult.(22)

    Also bear in mind that a hamster's cage should be be kept in the child's bedroom. At night the hamster's activities will disturb the child's sleep and during the day the child may disturb the hamster's sleep. If the hamster cage must be placed in the child's room, make sure that the cage is not placed directly next to the child's bed and that the child does not make too much noise during the day such as listening to overly loud music. It is probably best to also invest in a good, silent wheel. As for the type of a cage a bin cage or aquarium is probably the best option so that the hamster cannot chew on the bars of a wire cage during the night. (22)

    It is also important to remember that while hamsters are not the most expensive pets available they are not exactly cheap either. Hamsters have their own specialized needs such as needing a large space, their nocturnal/crepuscular schedule, special dietary needs for diabetes-prone dwarfs, etc. They may also need to a vet at some point in their life which can be quite expensive depending on your location.(22)

    Myth: Hamsters smell.

    Truth: Any animal, even humans, will smell badly if their home isn't kept clean. Hamsters typically are not smelly animals, in fact they are quite clean and often groom themselves more often than a cat does. They are also tidy, in the wild they have separate parts of their burrows to use as a washroom which they either empty out or bury. In a cage hamsters don't have a chance to do this, so it is up to the owner to clean the cage. If the cage smells than it is in need of cleaning. The cage may also not be well ventilated in which case, modifications or a cage change may need to be in order.(22)

    Female hamster may emit a strong, musky smell when they are in heat. Not all females smell strongly when in heat and not everyone can detect this smell. Some male hamsters will also have a stronger, pungent and musky scent than others and this should not be mistaken for an issue. It isn't exactly a bad smell, just different. Both of these odours for either sex are used to attract mates and otherwise warn other animals and hamsters of their presence.(22)

    Myth: Hamsters do not require a vet?(22)

    Truth: While hamsters do not require vaccinations and neutering isn't often performed on such a small animal, hamsters do occasionally need a vet. Hamsters can become ill just like any other kind of animal. When they do become ill they can go downhill quite quickly so it is important not to dawdle and play the waiting game. Hamsters are also good at hiding any health problems, as prey animals they need to be good at hiding it so that they don't seem like an easy target. Watching your hamster daily for changes in behaviour, appetite, or anything out of the ordinary can help you detect if something is wrong.(22)

    It is essential to understand that hamsters should not be treated as disposable pets. The ideology that they are not worth paying vet bills for is outdated and wrong. Whether you can get another hamster for $10 is not important when it comes to being a responsible pet owner for the living being that depends completely on you.(22)

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