fur may stuck into it. And if zipper gets stuck for whatever reason the dog may not like sitting for the prolonged time while you're trying to unstuck it. Of co

fur may stuck into it. And if zipper gets stuck for whatever reason the dog may not like sitting for the prolonged time while you're trying to unstuck it. Of course it all depends on specific circumstances, and it is definitely great that it works for your dog. A garment with zipper also requires much better fitting - which giving dog shapes variations may be a tall order - than say with Velcro where usually there is some latitude, and with Velcro it is much easier to make adjustment by moving it a bit if needed while making adjustment with zipper looks daunting.