I wonder if they routinely check for back problems, considering dogs weren't made to walk upright.

This is the same reason so many humans have back problems. Even in the grand scale of evolution, humans are still in the early stages of upright adaption. One more piece of evidence for evolution at work. Small incremental changes eventually reaching it's goal of perfecting the walk without pain. One day....

Eons later, our mouths shrink down to a sliver opening because we adapted to eating less.

Our eyes will get bigger and bigger because our brains are bigger, and need to learn more, and faster.

Our ears will need less acoustic help. We will have small openings.

Funny....that describes Aliens from space......hmmmmmm They are us visiting from the future....hmmmmm

People always say....well.....if there was such a thing as a time machine, people would come back from the future and meet us. Well.....DUH......Whoever said they'd still look like us millions of years from now.

Aliens are our relatives. The earth is a zoo.  If the Earth is a zoo, then those Aliens must be our inlaws.......lol Especially the mother-in-laws...

http://www.youtube.com/watch?v=emiZpSuz-eA