We have lots of farm cats - 14 or thereabouts - have some lodgers, and they come and go, but 14 are mine! Have some kittens who are about 4 months old. Tonight, I found one of them with an empty cat food can stuck on his head. It was not stuck fast, and came off with no trouble, just that he had stuck his head in and could not get out. Goodness knows how long he had been like that, he would have died as there was no air in there and his head and neck were wet through. Don't know where he found the can as we do not leave any lying around they all go in the recycling bag.
He was very pleased when I released him, and I told him he is a very lucky kitten, who is now minus one life.