A panda walks into a bar...

Panda sits down and starts eating some peanuts out of a dish on the bar. A few minutes later, he pulls out an uzi and starts firing at all the customers. Panda gets up, and lumbers out of the bar.

A few days later, the same panda walks back into the same bar. He sits at the bar and starts having some pretzels. A few moments later he pulls out a shotgun, and BLAM! BLAM! More dead customers, and off our panda goes into the night.

A week later, same panda, same bar. Panda sits down, picks up a handful of macadamia nuts, and the bartender says, "Hey! Panda! What the hell do you think you're doing? I've barely got any customers left after what you've done. You've got a lot of nerve coming back in here."

The panda eats a few more nuts and stares blankly at the bartender.

The bartender yells, "Well don't you have anything to say for yourself?!?"

The panda stands up and says, "What can I say? I'm a panda. Look it up." Pulls out and AK-47, kills everyone but the bartender, and out the door he goes.

The bartender is beside himself, but the panda has piqued his curiosity. He goes and gets an encyclopedia. He opens to the entry on pandas and reads: Panda: Mammal. Eats Shoots and Leaves.

Edit for spelling