Is it legal to carry a small key chain baton in CA? If so, what else could I carry to protect my dogs? ?

DO NOT EVER CONTACT THE POLICE ESPECIALLY IN CA OR ANYWHERE ELSE. YOU SHOULDNT ASK THEM FOR LEGAL ADVICE, THEYRE THE PEOPLE WHO ARE THEYRE TO ARREST YOU IF YOU TRY TO PROTECT YOUR DOG. That being said, get some strong mace. In CA its pretty much impossible to get a CCW and even mace may be illegal depending on where you are. I'm sorry, what you should do is probably walk him in an area where theyre arent any dogs to attack him.