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The term "winter white" derives from the fact that in the wild the hamster changes its fur colour to white for the winter months. This camouflages the hamster and reduces predation when snow is on the ground. Campbell's dwarf hamsters do not change fur colour during the winter and can only be described as being "winter white" erroneously. [2]
Djungarian [or Dzhungarian [5]] hamster Russian white or Russian winter white hamster winter white (dwarf) hamster Siberian hamster [8] striped hairy-footed hamster [15] striped desert hamster [17] P. campbelli is known as: Djungarian [or Dzhungarian] hamster [15] Campbell's (dwarf) hamster [6] Campbell's desert hamster [17] P. roborovskii is ...
Winter white hamsters tend to have slightly smaller litters, as do Chinese and Roborovski hamsters. Intersexual aggression and cannibalism Female Chinese and Syrian hamsters are known for being aggressive toward males if kept together for too long after mating.
Chinese hamsters, dwarf hamsters, winter white hamsters, Roborovski hamsters, and Cambell's dwarf hamsters are all species that can safely be kept together.
[3] [4] The dorsal stripe of Campbell's dwarf hamster is narrower, shorter, and darker than that of the Djungarian hamster, and the fur on the stomach of Campbell's dwarf hamster is grey, but it is white on the Djungarian hamster. [5] Campbell's dwarf hamster does not turn white in the winter and has a grey tint to its fur.
Some animals seasonally go into long periods of inactivity, with reduced body temperature and metabolism, made up of multiple bouts of torpor. This is known as hibernation if it occurs during winter or aestivation if it occurs during the summer. Daily torpor, on the other hand, is not seasonally dependent and can be an important part of energy ...
In response to the conditions of the environment, some mammals, such as bat delay the implantation due to the cold temperature in winter. [37] Another factor is due to the shortage of food stocks during winter as the insects are being driven away and as the result, bat hibernate in pregnant condition.
The desire for, or occurrence of, more sleep during winter may have to do with how light fluctuates throughout the year, or with the behavioral and mental health changes that can result.