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Hamsters are most active early in the night, then become less active as the night passes. [2] A study of Syrian hamsters in the wild found that they were active almost exclusively in the daytime, which is a surprising difference from behavior in the laboratory. [2] The sleeping behavior of wild hamsters is not well understood. [2]
Certain tests may change normal behavior. Syrian hamsters (Mesocricetus auratus) are one of several rodents used in animal testing. Syrian hamsters are used to model human medical conditions including various cancers, metabolic diseases, non-cancer respiratory diseases, cardiovascular diseases, infectious diseases, and general health concerns. [1]
Mesocricetus is a genus of Old World hamsters, including the Syrian or golden hamster, the first hamster to be introduced as a domestic pet, and still the most popular species of hamster for that purpose. Recent research has shown that, unlike almost all other land mammals studied, all species of this genus lack the capacity for color vision. [2]
The golden hamster or Syrian hamster (Mesocricetus auratus) is a rodent belonging to the hamster subfamily, Cricetinae. [2] Their natural geographical range is in an arid region of northern Syria and southern Turkey. Their numbers have been declining in the wild due to a loss of habitat from agriculture and deliberate elimination by humans. [1]
A Syrian hamster (Mesocricetus autatus) standing in exercise wheel. The best-known species of hamster is the golden or Syrian hamster (Mesocricetus auratus), which is the type most commonly kept as pets. There are numerous Syrian hamster variations including long-haired varieties and different colors.
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Ethograms are used extensively in the study of welfare science. Ethograms can be used to detect the occurrence or prevalence of abnormal behaviours (e.g. stereotypies, [5] [6] feather pecking, [7] tail-biting [8]), normal behaviours (e.g. comfort behaviours), departures from the ethogram of ancestral species [9] and the behaviour of captive animals upon release into a natural environment.
Sand cat Gray wolf Least weasel Marbled polecat. There are over 260 species of carnivorans, the majority of which feed primarily on meat. They have a characteristic skull shape and dentition.