Hello, I just need to share my awful experience this morning. I put new collars on the kittens yesterday evening. They seem to be used to them within an hour or two and so nothing of it when we went to bed. Got up this morning and opened the door to the living room to find Ziggy with his paws, reddish with blood. I then noticed the little booger had managed to get the collar over his bottom jaw. I think it must have been like that all night, looking at the varying colour of the patches of blood smeared on the floor. He was ok and immediately started purring, even when I was cleaning him up + begged for and ate his breakfast, but his poor little mouth is swollen on both sides. I don't understand why the collar did that, it wasn't too loose when I put it on. The safety catch hadn't come open??? I used minimal force to open it but it must have been just a bit much for poor Ziggy. I don't think I'll bother with a collar now I've had this experience. I officially have collar fear. Needless to say I feel awful!