I have learned through the past few holidays what works and what does not, here are a few tips:
1. They do not want anything covering their heads or ears. I think because it such a strong part of their sensory system, they need to keep their ears and whiskers open. A hat on the cat or dog will barely last long enough to snap a photo.
2. A comfortable elasticized collar with a costume attached to it works well. Dogs and cats are accustomed to having something on their neck, so this is often the best route to take. Just make sure it is the right size (Most pet costumes come in S, M, L) and the costume doesn't stick too far out into their peripheral vision.
3. Take your animal's personality into consideration because any type of sound adornment can be stressful to the animal. For instance, my cat loves bells on her collar, but for the dog, it is a source of irritation. What is right for one animal may not be right for another.
Finally, Halloween 2010:
Beans the Kitty as a Spider:
Indy the Dog as Count Barkula:
Am I the only crazy one dressing up their dog and cat? Please tell me one of you is joining me in the Wacky Pet Owner Club.