Outside our office we have bird feeder. We often get visted by this little chap who we call Cyril
Cyril only has two legs. He is missing his front left and his back right. He has a little stump for a front leg to help him eat nuts. Around 40 seconds in you will see how he walks on two legs.
We put some nuts in a bowl for him because unlike the other squirrels he can't climb up to the bird feeder.
Video of Cyril the two legged squirrel