Snow camouflage as Hugh B. Cott have echoed his observations, adding that other animals of the Arctic such as musk ox, moose, reindeer, wolverine and raven never become white "even in the coldest parts of their range". Cott noted that both animals that hunt, like polar bear and stoat, and prey animals like ptarmigan and mountain hare, require camouflage to hide from prey or from predators respectively. There is little experimental evidence for the adaptiveness of white as camouflage, though the ornithologist W. L. N. Tickell, reviewing proposed explanations of white plumage in birds, writes that in the ptarmigan "it is difficult
Winter white dwarf hamster white is known to be one of the most tameable types of hamsters. The hamster has no fully accepted common name, Winter white dwarf hamster and Russian dwarf hamster are among the most often used. Confusion arises because of their physical similarity to the Campbell's dwarf hamster, consequently the name Djungarian hamster and Russian dwarf can refer to both Winter white and Campbell's dwarf hamsters. The term "Winter white" derives from the fact that in the wild the hamster changes it's fur colour to white for the winter months, this camouflages the hamster and reduces predation when snow is on