A good place to start for breeder referrals is the American Kennel Club. They have a very good breeders directory. Or, go to a dog show. It's been a topic of major discussion. Slow rising, slower gait, doesn't jump up on things, doesn't climb stairs as much.
Cats are funny - they have very strong personalities.
That's the allure of cat ownership. Cats tolerate us - some better than others. But their beauty makes up for the expense and limited number of fish. So there is no negative to owning saltwater fish. No, it's not a big deal at all.