Contains 2 photo albums: My Best Friend Dog My Weird Friend Cat The dog and the cat are two very different animals from each other. The dog is a companion animal that is often trained to help people in different activities, such as guiding the blind or mountain rescue. Dogs are known for their loyalty and affection toward their owner and their ability to learn. The cat, on the other hand, is an independent animal and needs less attention than dogs. Cats are often used to keep mice and other animals out of homes, as they have a strong predatory instinct. Cats are known for their agility and their ability to climb trees and other tall objects.