We don't take any of our animals in to be groomed, but a friend of mine was just telling me about a person who took there dog in to be groomed and the groomer actually cut the dogs ear off and superglued it back on--I don't know the breed of the dog, nor the condition of the coat...
I guess the owner was giving the dog a bath (not sure how long after the grooming), but anyway, they were giving there dog a bath and when it got wet I am assuming the glue stopped holding and the ear fell off in the shower(I believe)....
I never heard this other than from my friend, so don't know all the details, never checked out it's trueness either....
Scary though that it could happen...