When I took (RB) Tonee to Petsmart for years, they were not allowed to take tips.

Now we take Nina to a small shop and the owner is the groomer. I have not tipped. But I am a server and always want tips, so maybe I should. But she is the owner and takes in all the money, and sets her own prices. So she keeps it all except for overhead.

Not sure what to think about it. I'll see what more people say here.
Katz