Bunnies were my first thought too this morning. We're in Sussex and the air feels heavy, and altho my two don't have respiratory problems, Tia had a rattly chest for a long while when we first got her, not bad enough to ned treatment, but bad enough for the vet to monitor, she's been clear a while now, but she has slowed down over the last couple of days, so I think I'm going to book her in for a quick check of it, just to be safe, I'd rather pay the £15 to have her checked than have her suffer.
I guess that the fact they're so low to the ground is a good thing ?