When you hear people complain about Siegfried & Roy and
the way they treat animals take it with a giant grain of
salt and keep in mind:
1.  There are people who would say you are mistreating your
cat if you keep him/her indoors.  They would call that animal
abuse.  Never mind that the cat stands a good chance of
getting hit by a car, etc.
2.  There are those people who would say you are guilty of
animal abuse if you keep a pet.  They would argue that
you are an animal abuser if you don't allow that cat/dog
to run free and not be held captive by you the owner.