We effect animals by just going about out daily lives. We plant food for the herbivores to eat, which the carnivores then eat, and then the omnivores (us) eat them. Also, pollution can affect animals...
Animal testing can have many effects on animals. For one, it can kill them or make them very sick. Tests done on animals can also cause them to loose hair, scales or fur. And it can ultimately cause...
The sperm whale is supposed to have the largest brain in the world, as far as mass and size of the brain alone, not in proportion to its body size. Speaking in terms of mass and in proportion to body...