Pegesus are ponies with wings. They can fly, and do what earth ponies can do.
Rainbow Dash: Rainbow Dash is a pony who dreams to be a wonderbolt. In Testing, Testing, 1,2,3 Edit
Rainbow Dash becomes a wonderbolt by aking a test. Compared to Twilight Sparkle, she gets worried, all because of a test! Now Rainbow Dsah has some pretty awsome things to catch up on!