Description | Description:Mexican Prairie dogs live only in the grassland valleys of Mexico. They have mouse-like ears and blunt noses, and usually develop and thicken their fur during winter. Their large auditory glands can pick up sounds ranging from 29 to 26,000 Hz. | 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”. |