Do caribou have to live in grassland?

Caribou do not reside in a desert of any kind. The conditions of a hot desert are too strenuous since it has a shaggy coat, there is extreme heat, little plant life flourishes in a desert, and since there is little water. Additionally, a caribou cannot live in a cold desert such as in the Arctic. Again there are unfavorable conditions as the cold is too extreme, there is no vegetation, and water is scarce in a liquid form.