Description | Description:Porcupines are the largest of all rodents,living in jungles of Africa, Europe, and Asia. They are coated with long poisonous spikes for defense. These spikes separate from the porcupine, painfully stick into the victim, and are difficult to remove. Porcupines are mostly grey and brown, but some are white in color. | 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. |