Most females don't breed until they are 28 months old, and will give birth every year. Newborns can walk within an hour and in a few days can run with the herd. Still, wolves, grizzly bears, and golden eagles kill a large number of newborn calves. Although some people are moving into their habitat, they seem to have adapted. Reindeer is not endangered, thanks to its ability to tolerate climates people would rather not deal with. Snowshoe rabbit It is larger than other rabbits. It has large rear feet and the toes can spread out to act like snowshoes. Their feet also have fur on the bottom, which protects them from the cold and gives them traction in the snow. In the summer its fur is rusty, greyish brown but is turns pure white in the winter, except for its eyelids and the tips of their ears. They have three to four litters a year with one to eight in each litter.
Although there isn't a lot of biodiversity, only 48 species of land mammals are found on the tundra, there are a lot of each species. These consist of slightly modified shrews, hares, rodents, wolves, foxes, bears and deer. There are huge herds of reindeer in North America that feed on lichens and plants. There are also smaller herds of musk oxen. Wolves, wolverines, arctic foxes, and polar bears are the predators of the tundra. Smaller mammals are snowshoe rabbits and lemmings. There aren't many different species of insects in the tundra, but black flies, deer flies, mosquitoes and "no-see-ums" (tiny biting midges) can make the tundra a miserable place to be in the summer. Mosquitoes can keep themselves from freezing by replacing the water in their bodies with a chemical called glycerol. It works like an antifreeze and allows them to survive under the snow during the winter. The marshy tundra is a great place for migratory birds like the
Raskematel juhtudel võivad liigesed tursuda ning reumataoline haiguspilt püsib nädalaid või isegi kuid. Vähem uuritud, kuid Sindbis'ist kümneid kordi levinum on Inko-viirus. Selle kandjaks on kaks-kolm kümnest Soome maaelanikust. Lapimaal aga nakatub enamik inimesi sellesse juba enne 20. eluaastat. Soomlased näitasid hiljuti, et Inko on identne Jamestown Canyon- viirusega, mis tekitab mõningatel juhtudel entsefaliiti. Soomes kannavad sääsed edasi veel ka Snowshoe hare-viirust, mis on võimeline haigust tekitama. Eesti sääsed Soome omadest suurt ei erine ja nakatavad küllap meidki samalaadsete viirustega. Suvel esinevaid arusaamatu põhjusega palavikuhaigusi nimetatakse tihtilugu üldistavalt gripiks. Tõeline haigustekitaja jääb välja selgitamata http://www.postimees.ee/luup/98/13/teadus2.htmr. 4.2.2. Puugid Närilised ja soojaverelised ulukid on ka puugihaiguste tekitajate, eeskätt puukentsefaliidi ja
OTHER PIEBALD CATS There are quite possibly several genes which influence white spotting. For example, the patterns above might not be due to a single gene - there may be several other genes which modify its effects. There are also other piebald patterns which appear to be due to different genes or to cats being homozygous for a modifier gene since the effect is relatively uniform and predictable. The gloves (mitts) on Birman and Snowshoe cats appear to be due to an incompletely dominant gene. The gloves may vary in length but they are restricted to feet and/or legs. The white markings on the forehead and chest of breeds such as the Snowshoe may also be due to a gene which limits the amount of white. Lockets - those small spots on the throat, chest, stomach and groin of otherwise solid coloured cats also seem to be due to a different gene - one which is normally hidden by the more extensive white spotting of piebald cats
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