smart

Limbani The Chimpanzee

Baby Chimpanzee Shows He's a Skilled Escape Artist

Cat Door Fail

Genius Cat Realizes He's Too Smart to Use a Cat Door

By Paige Cerulli

Moritz The Pig, puzzle

Moritz The Pig Shows His Skills as Puzzle-Solving Genius

By Stacey Venzel

Collie

10 Facts About Collies That Prove They Are a Beautiful Breed