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. 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 entire laboratory and pet populations of Syrian hamsters appear to be descendants of a single brother–sister pairing. Hamsters are hindgut fermenters and often eat their own feces ( coprophagy) to recover nutrients digested in the hind-gut, but not absorbed.

Effect of Exercise on Photoperiod-Regulated Hypothalamic Gene Expression and Peripheral Hormones in the Seasonal Dwarf Hamster Phodopus sungorus". The judging of hamsters usually includes a goal of promoting hamsters which conform to natural or established varieties of hamsters.If breeding hamsters, separation of the pair after mating is recommended, or they will attack each other. The breeding season is from April to October in the Northern Hemisphere, with two to five litters of one to 13 young being born after a gestation period of 16 to 23 days. By awarding hamsters which match standard hamster types, hamster shows encourage planned and careful hamster breeding.

Molecular phylogeny of the Cricetinae subfamily based on the mitochondrial cytochrome b and 12S rRNA genes and the nuclear vWF gene" (PDF). They are extremely susceptible to rapid temperature changes and drafts, as well as extreme heat or cold.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.

Hamsters tend to love peanut butter but it is important to feed it to them carefully because this sticky food can get stuck in their cheeks.Other hamster species commonly kept as pets are the three species of dwarf hamster, Campbell's dwarf hamster ( Phodopus campbelli), the winter white dwarf hamster ( Phodopus sungorus) and the Roborovski hamster ( Phodopus roborovskii). Mother hamsters can also use their sense of smell to find their own babies and identify which ones are not theirs. Syrian hamsters are seasonal breeders and will produce several litters a year with several pups in each litter.