The subject: collars. I have told my pet buyers over and over that collars for pets are not a good thing for several reasons. First of all, that cute little bell on there is only for outdoor cats to warn birds they are coming and actually can be a torment to a cat's ears. Second, it ruins the beautiful ruff of the siberian, that cannot grow in all it's glory with a collar on. Third (and this is the reason for my post), it can kill your cat.
One of my kitten buyers just called me, sobbing. One of her cats she got from me years ago (the cat was almost 8 years old)) apparently was chasing a spider on the wall, jumped at it and with that hung himself on the wall mounted coat rack and did not survive. The collar this cat wore was a "snap collar" that guarantees the collar will snap open given the cat is over 5 lbs. This was a 17 lbs mature male, the collar did not snap open, and he had to pay for it with his life. Mind you, this cat had worn his collar for 7 years and was quite used to it.
Please, be super careful when your cat wears a collar, because they get into stuff you would never dream of and it can be a real hazard! Opt to microchip your cat, because if a cat gets lost, in nature there are a million things a collar can hook on and kill your cat. When a cat is found, any shelter or rescue scans for a microchip first anyway. Please consider taking your cat's collar off! The advertised "safe cat" is not safe at all!