Been up all night keeping an eye on him. Not eating or drinking, and extremely lethargic. His breathing looks good and his pulse is normal.
Going to take him to the vet at 10, hopefully this isn't the end. He's 17 and we've been fearing that one day he'd just crash on us.
Spare a thought for Munchie. Hopefully he'll pull through once the vet has a moment with him.