I've had my bun for over eight years now and he's a little bit older than that, I got him when he was about two or three (the previous owners didn't know). Today, he was running around for a little while and I noticed him breathing strangely. I picked him up to see if he was ok and I heard him making unusual noises. He was squeaking quietly and grinding his teeth together, and his breath was twice as fast as normal. I've heard him squeak quietly before when he was scared but I've never heard it so loud and often, nor have I ever heard him breathing so heavily. I put him up on my bed to watch him and calm him down, in case he just ran too much and was tired or somehow got spooked, but he just sat still. He's NEVER like this, he always runs back and forth. Just the day before, he was running around like he always does. I pet him for a little and listened to him to see if his breathing slowed, but it didn't. I left the room to talk to my mom to see if she knew what was happening and when I returned, he was sitting in the exact same place. Again, this is super unusual. He's a very active bunny. Him sitting still for ten minutes is unheard of. I put him on another part of my bed but he only went back to sit on the blanket he was originally on, in the same place. It is a heated blanket but it hasn't been on since yesterday and is not warmer than the blankets around it. Since then, he has lied down in the spot and stayed there. I can't take him to a vet, I cannot afford it. My bunny's old, I don't want to force him to go through an uncomfortable vet visit or be forced to take shots. I know it sounds silly, but the vet is not an option. Please, is there anything I can do?