Description | Description:Reindeer live in herds in the arctic tundras of the Americas, Asia, and Europe. Its hooves become spongy during summer when the tundra is moist and soft. They again harden for winter so they can dig through snow. Reindeer migrate over 3,000 miles annually, more than any other mammal. | Description:Norway rats were once native to brushy areas and forests of China. Through trade, it was introduced to Europe. With the explosion of human population, rats made their way to every home they were able to. They are have brown fur and are sometimes called “brown rats”. |