AITA for not letting someone use my pet as a prop in a photo shoot?

I (30m) have a pet ferret named Bandit. Bandit is very well trained and travels with me almost everywhere I go. I even have a harness and leash I walk him on. He's very well socialized to a lot of people and is overall just a very chill little guy. He's also a rescue, I mention this because that will be relevant later.<br><br>My cousin (24f) is getting married. I was invited and I am going. They were discussing table decorations and this and that when my cousin said she wanted to take a couples photo with Bandit and the professional photographer they hired. I politely told her no and she got very upset and said Bandit already knows her and that he was the only ferret in the family, so it was a "no brainer". I repeated that Bandit was not going to be used as a prop in this and she got mad. She said Bandit didn't even have a choice and I was power tripping. I said that Bandit was a live animal and I wasn't going to deprive him of food, water, and shelter just for a stupid photo shoot.<br><br>She called me an asshole and I called her one right back. She demanded I bring him because "he's basically part of the family". I said no again. She called me names and we didn't speak for the rest of Christmas dinner. Now she's blowing up my phone and I just ignore the calls. <br><br>Bandit is also a rescue ferret because he was used as a prop at someone's birthday party and they tormented him to the point where he was in critical condition. I don't want him to ever have to go through that again.