First, think of THE DOG. They dont' EVER get "cosmetic" shit done themselves because...dun dun dun...they dont' fucking care because they are dogs and that shit is...NOT NATURAL.
If you think it looks better, it's up to you. You own the dog. I personally think it looks stupid and I think owners that do that are pieces of shit for MUTILATING their animals, but hey, whatever floats your boat I guess. If I was that dog, and you did that to me, I'd tear off your face when you were sleeping.