I admit, I'm a little jealous of the gorilla at the Philadelphia Zoo. Louis the gorilla walks on two feet just like you and me, but he's got better posture than me. 18-year-old Louis hates to get his hands dirty. That’s why he sometimes walks upright like a human -- especially when food is involved.

Louis, a 500-pound, 6-foot tall gorilla walks upright when he’s carrying tomatoes and other snacks, according to the Philadelphia Zoo. When carrying heavy loads, I've been known to slouch over under the strain and drag my knuckles on the ground.

Here's a post about Louis from the Philadelphia Zoo. Good walking, Louis!  Ever play any basketball?