I swear my dogs trip themselves on flat surfaces.
I have a corgi blue healer mix. They just were never meant to go down stairs. I can't even remember how many times he's tripped on the last two steps and fallen *** over tit. He's hilarious when he does this because he tries to play it off like it didn't happen. XD
My other dog is a mini aussie and she all leg. The other day she took a running leap for the couch, over shot it and went flying over the back. She was so bewildered.