A Smart Chimp. Here we see a chimp outsmarting a human in a memory test! Just more proof that animals can have mental abilities that surpass human mental abilities. Some animals are smart, but at different things than humans are smart at.
Note: if any of these videos suddenly stop (for some inexplicable reason), just restart it; it should work. I had no trouble playing them in Chrome (Firefox was not as good). But these and more are also on youtube.
Crows. Below, we see a smart crow solving a problem.
Dolphins and Humans. How similar are dolphins to humans?
A Smart Dolphin? How smart is this dolphin?