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These hardy animals have some of the longest migration patterns in the animal kingdom. Reindeer typically migrate to forage for food. Reindeer feed on grass, moss, lichen, and other vegetation.
The bacteria and protozoans in the stomach of a reindeer break down lichen compounds into sugars that the animals use for sustenance. Reindeer need a lot of food to survive a long winter.
An ectotherm (from the Greek ἐκτός (ektós) "outside" and θερμός (thermós) "heat"), more commonly referred to as a "cold-blooded animal", [1] is an animal in which internal physiological sources of heat, such as blood, are of relatively small or of quite negligible importance in controlling body temperature. [2]
[2] [41] The word reindeer is an anglicized version of the Old Norse words hreinn ("reindeer") and dýr ("animal") and has nothing to do with reins. [42] The word caribou comes through French, from the Mi'kmaq qalipu, meaning "snow shoveler", and refers to its habit of pawing through the snow for food. [43]
Reindeer also travel, feed, and rest together in the wild, sometimes forming super-herds of up to 500,000 animals. Tundra reindeer migrate between forest and tundra in these massive groups in an ...
The mountain reindeer has several physiological adaptations to cope with different environmental temperatures. Reindeer have hemoglobin that allows for high oxygen unloading even at very cold temperatures. [1] This is essential because reindeer limbs are often kept much colder than core body temperature, a phenomenon known as regional ...
The number of reindeer in the wild is rapidly dwindling, and the species is now classified as vulnerable. 6. Baby Reindeer are Called Calves. Baby reindeer are called calves, as are baby moose and ...
Cold-blooded is an informal term for one or more of a group of characteristics that determine an animal's thermophysiology. These include: Ectothermy, controlling body temperature through external processes, such as by basking in the sun; Poikilothermy, the ability of an organism to function over a wide internal temperature range