My dog Roxy recently broke her collar, and we had to get her a new one. She currently does not have a collar on, but we cannot get the new one on because she snaps at us when we try. We have looked all over the Internet for solutions, and all of the solutions involve giving her food; however, we cannot do that because she does not eat when she is upset.
This is not an isolated incident; she snaps whenever she is upset. She has never bitten anyone, but she has caused minor injuries, and because she is very big (she was rescued from a dogfighting place soon after she was born; thankfully she was not trained) we are afraid that she is capable of hurting someone.
For the time being I would appreciate it if I could have some advice on how to get her collar on, but after that it would be helpful to receive some advice on how to train her in general without using food.
Thank you very much in advance!