@glitterbag,
You never know unless it's on the outside. It could have been that which took Bob he had had a tumour removed after all.
At least I didn't have to have him put down. I came downstairs and he was dead and the night before he'd been quite content.
I went to see a friend on Monday and her cat was put down on the Sunday. Everything was normal until she got a call from an animal shelter saying Syd, (the cat) had been handed in. She can't drive so was reliant on taxis/friends. The shelter couldn't treat Syd because they only treat the pets of people on benefits, but he needed attention.
She had to take him to the only surgery open on a Sunday at the other side of town only to be told he needed to be put down.
I didn't have any of that.