We like to think that we're more adept at getting what we want from animals: After all, we have the powers of critical thinking, deductive logic, and most importantly, speech. But animals aren't as helpless as we give them credit for: Sometimes, they even mimic human behavior to make sure their needs are being met.
Take this lemur, for example. He's getting a back scratch from two little boys, and he seems to be enjoying it. When they stop, he has to figure out a way to let them know that he wants them to start up again. What he does will make you laugh out loud, because it's the same thing you would do.