Intelligence takes shape differently depending on the species.

Cats and dogs have been measured against each other for as long as people have kept both under the same roof. The question of who is smarter lingers not because it has a clear answer but because intelligence itself looks different across species. Scientists now study brains, behavior, and problem-solving in both animals, and what they find is less about one being superior and more about how each evolved to think. When you measure smarts by survival strategies, loyalty, or independence, the truth gets both fascinating and complicated.