Pigs can beat dogs and solve problems just as remarkably as chimpanzees. Among other talents, pigs have excellent long-term memories, are skilled at completing mazes and identifying symbols.
Mice are extremely social, playful, curious, and affectionate. They have a similar ratio of brain weight to body weight as humans. They are also capable of learning and can be taught tricks.
Cows are highly settled and intelligent animals capable of solving a variety of problems. They also have a rich and multifaceted emotional life. Scientists discovered that cows actually make friends and enemies.
What do you think ?