took him to the vets this morning for a health check to go on their payment plan (£5 a month pays for treatment if needed) and when I brought him back he didnt quite seem himself and was sitting down a lot and shuffling under the bed. Took him back to the vets and turns out he has sprained one of his back legs somehow, I was terrified that he had broken it, but he was happy to hop around when the vet put him on the floor - he had a painkiller and is now snuggled up under the bed with Smokie looking after him.