Their Rears look high up because she shot them on a hill with their front going down hill. I know because I have done the same type of photo shoot. Not appealing for anything with length like dogs and horses. It's always best to shoot them going up hill.
As for the colors and size, god made them so enjoy them. Unfortunately breeders used to kill the "ugly" or "non-conforming" to their standard pup. Now people can enjoy all of gods creations.
