I'm not sure if anyone can offer any advice but I'd appreciate any ideas.
We rescued a rabbit in August last year, he'd been dumped outside pets at home and was in there almost 3 months because no-one wanted him. He wasn't friendly, had no interest in people and as such was overlooked.
We took him as I hated the idea of him being there, he wasn't neutered and I chose not to get him done, we had no intention of getting another rabbit as he was bad tempered so it seemed daft risking him on an operation.
So he has a double layered 6ft hutch and a run that's about 2 x 4 metres. Each night-time we close the hutch, and in the morning he comes out and runs about.
We have chickens he loved to chase (they have their own run but would flap/jump into his run, often we'd leave the chickens run open so he could double his space to run about, when our dogs were in he was also given the run of the garden, he loved going under the hedge to explore.
He still didn't like being stroked, but he'd come to us for food and allow us to hand feed him.
His run was also next to our guinea pigs run. He didn't go in with the guineas in case he kicked them. Not sure if it's relevant that he lived near chickens and guinea pigs. None have shown any sign of illness at all.
Yesterday he was his usual self, jumping about, chilling and doing what he wanted.
This morning we open his hutch up to find he's died.
I can see no sign of injury, there is no way a fox or other creature has got to him. He had a regular diet of pellets and veg, always fresh hay and water.
I simply don't understand what could have happened to him.