I am currently using a four light set-up - all Canon flashes. I bounce two off of the cieling to take care of shadows. The other two are placed so that I can keep the entire pet lighted properly from all angles. Usually I make the bounced flashes a bit stronger than the direct flashes. I have found that it helps eliminate shadows and helps the pet pop out.

You are right though about the kittens and the backdrops. This family has two cats...and I have a photograph of one of the cats staring balefully at Trixie as she was climbing up the backdrop. It is quite funny. If I can dig it out later, I will!

James

PS Next time I am in England, I will collect that beer.