My one year old Jersey Wooly is laying down and breathing somewhat fast, and he’s shaking. I nudged him a bit but he wouldn’t move.. I don’t know what to do, he’s always seemed perfectly healthy before. He’s a bit larger than most Jersey Woolies and he’s had a good appetite. He eats Purina rabbit food, Timothy hay, and fresh romaine lettuce. He does have a brother living with him, they’re bonded and they’re both neutered. Any help would be greatly appreciated. I’m not an expert by any means but I’ve read many rabbit books and did a lot of research before getting these rabbits and I never heard of anything like this.