Pets

Hi,

I wondered if anyone has any advice on pets. We agreed at the time of breaking up that I would keep the dogs. At first he didn't want to see them, then he wanted to see them once a month and now he wants them. His currently living at his mom's who doesn't have a secure garden and has another dog (my one dog doesn't get on well with other dogs). He told me he had changed them into my name on their microchip. This hasn't been done. The vets are in my name, the petplan and insurance is paid by me and I've been looking after them (walking, feeding ect) since he left. His now refusing to sign the microchip paperwork and I'm worried his going to try and use the house settlement money to get them as his recently changed the amount he wants/former agreement and left me with nothing (his words - your going to have 0 in your bank account when all this is over). He started to change and now I don't believe anything his said previously.

What's the best way to protect myself and make sure I keep the pets?