ON TRAVAILLE POUR LE HAMSTER - LES P'TITS BONZOMS

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Taxonomists generally disagree about the most appropriate placement of the subfamily Cricetinae within the superfamily Muroidea.

In the wild Syrian hamsters can hibernate and allow their body temperature to fall close to ambient temperature. The entire laboratory and pet populations of Syrian hamsters appear to be descendants of a single brother–sister pairing. Their eyesight leads to them not having a good sense of distance or knowing where they are, but that does not stop them from climbing in (and sometimes out of) their cages or from being adventurous. After that, she was happy since all she wanted from him was hardcore sex, which he provided with the satisfaction of his large cock. Wild hamsters will also appropriate tunnels made by other mammals; the Djungarian hamster, for instance, uses paths and burrows of the pika.By awarding hamsters which match standard hamster types, hamster shows encourage planned and careful hamster breeding. The name "hamster" is a loanword from the German, which itself derives from earlier Middle High German hamastra. Although pet hamsters can survive on a diet of exclusively commercial hamster food, other items, such as vegetables, fruits, seeds, and nuts, can be given. These include the maned hamster, or crested hamster, which is really the maned rat ( Lophiomys imhausi). conducted a molecular phylogenetic analysis of 12 of the above 17 species using DNA sequence from three genes: 12S rRNA, cytochrome b, and von Willebrand factor.

If breeding hamsters, separation of the pair after mating is recommended, or they will attack each other. Molecular phylogeny of the Cricetinae subfamily based on the mitochondrial cytochrome b and 12S rRNA genes and the nuclear vWF gene" (PDF). In the wild, the burrow buffers extreme ambient temperatures, offers relatively stable climatic conditions, and protects against predators. Both Syrian and Russian hamsters mature quickly and can begin reproducing at a young age (4–5 weeks), whereas Chinese hamsters will usually begin reproducing at two to three months of age, and Roborovskis at three to four months of age. One rodent characteristic that can be highly visible in hamsters is their sharp incisors; they have an upper pair and lower pair which grow continuously throughout life, so must be regularly worn down.Years later, animals of this original breeding colony were exported to the United States, where Syrian hamsters became a common pet and laboratory animal. Hamsters are hindgut fermenters and often eat their own feces ( coprophagy) to recover nutrients digested in the hind-gut, but not absorbed.

If housed together, acute and chronic stress might occur, [8] and they might fight fiercely, sometimes fatally. in) long; the largest is the European hamster ( Cricetus cricetus), measuring up to 34 cm (13 in) long, not including a short tail of up to 6 cm (2. It may be hard for the babies to not rely on their mother for nursing during this time, so it is important that they are supplied with food to make the transition from nursing to eating on their own easier. Females are in estrus about every four days, which is indicated by a reddening of genital areas, a musky smell, and a hissing, squeaking vocalisation she will emit if she believes a male is nearby.million years to the Middle Miocene Epoch in Europe and North Africa; in Asia it extends 6 million to 11 million years. The hamster tail can be difficult to see, as it is usually not very long (about 1⁄ 6 the length of the body), with the exception of the Chinese hamster, which has a tail the same length as the body.

Female hamsters are also particularly sensitive to disturbances while giving birth, and may even eat their own young if they think they are in danger, although sometimes they are just carrying the pups in their cheek pouches. They are extremely susceptible to rapid temperature changes and drafts, as well as extreme heat or cold.One extinct hamster of Cricetus, for example, lived in North Africa during the Middle Miocene, but the only extant member of that genus is the European or common hamster of Eurasia.