I've seen that a few times myself. Can't figure out why. It has to be delivered to a physical address so what difference does it make if it's a house or a business? It still has 4 walls and a roof. Maybe it has something to do with tax laws or city codes. There's crazy rules everywhere, why should shipping be any different?
"If there are no Dogs in Heaven, then when I die, I want to go where they went". Will Rogers
I work hard so my Dog can have a better life...