ON TRAVAILLE POUR LE HAMSTER - LES P'TITS BONZOMS

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They are also particularly sensitive to high-pitched noises and can hear and communicate in the ultrasonic range. Laboratory hamsters have not lost their ability to dig burrows; in fact, they will do this with great vigor and skill if they are provided with the appropriate substrate. Female Chinese and Syrian hamsters are known for being aggressive toward males if kept together for too long after mating.

They tend to learn similar noises and begin to know the sound of their food and even their owner's voice. The name "hamster" is a loanword from the German, which itself derives from earlier Middle High German hamastra. However, the differences in behavioral, chronobiological, morphometrical, hematological, and biochemical parameters are relatively small and fall into the expected range of interstrain variations in other laboratory animals.The best-known species of hamster is the golden or Syrian hamster ( Mesocricetus auratus), which is the type most commonly kept as a pet. If captive female hamsters are left for extended periods (three weeks or more) with their litter, they may cannibalize the litter, so the litter must be removed by the time the young can feed and drink independently. Syrian hamsters are seasonal breeders and will produce several litters a year with several pups in each litter. 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. The entire laboratory and pet populations of Syrian hamsters appear to be descendants of a single brother–sister pairing.

Taxonomists generally disagree about the most appropriate placement of the subfamily Cricetinae within the superfamily Muroidea. Testimony from Grant C Riddle (born 1929, living in Lake Wildwood, CA) who had a pet hamster in 1942. They have thick, silky fur, which can be long or short, colored black, grey, honey, white, brown, yellow, red, or a mix, depending on the species. By awarding hamsters which match standard hamster types, hamster shows encourage planned and careful hamster breeding. Mother hamsters can also use their sense of smell to find their own babies and identify which ones are not theirs.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. The Roborovski hamster ( Phodopus roborovskii) is extremely small and fast, making it difficult to keep as a pet.

Russian hamsters (Campbell's and Djungarian) live about two to four years in captivity, and Chinese hamsters 2 + 1⁄ 2–3 years. Enjoy the largest amateur porn community on the net as well as full-length scenes from the top XXX studios. 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. The average litter size for Syrian hamsters is about seven pups, but can be as great as 24, which is the maximum number of pups that can be contained in the uterus. Gestation lasts 16 to 18 days for Syrian hamsters, 18 to 21 days for Russian hamsters, 21 to 23 days for Chinese hamsters and 23 to 30 for Roborovski hamsters.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. All hamsters are excellent diggers, constructing burrows with one or more entrances, with galleries connected to chambers for nesting, food storage, and other activities.

This kind of thermoregulation diminishes the metabolic rate to about 5% and helps the animal to considerably reduce the need for food during the winter. 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. Some activists attempted to intercept owners who were on their way to turn in pet hamsters and encourage them to choose adoption instead, which the government subsequently warned would be subject to police action. It is possibly related to Old Church Slavonic khomestoru, which is either a blend of the root of Russian хомяк ( khomyak) "hamster" and a Baltic word (cf. 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.If housed together, acute and chronic stress might occur, [8] and they might fight fiercely, sometimes fatally. Effect of Exercise on Photoperiod-Regulated Hypothalamic Gene Expression and Peripheral Hormones in the Seasonal Dwarf Hamster Phodopus sungorus". The coat of the winter white dwarf hamster ( Phodopus sungorus) turns almost white during winter (when the hours of daylight decrease). 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.