The brain of another beast that can be compared to ours( it is different, it works else, but it’s similar in complexity and size) is that of the dolphin

The bone that can be compared to ours in functionality( it’s lower, it’s a little less complex, but it can be compared in how it works, which is as important as the rest) is that of the chimpanzee

And eventually you have the beast whose brain is bigger, more complex and eventually superior to ours, the blue Goliath

Because blue jumbos have no hands and live in the water, else we’d be their faves