I have been an active volunteer for the last 5 years at our local animal shelter. Our shelter has an open cat room where the cats have a collar (those also in cages in a seperate area)that are made out of a type of paper/fiber material. The collars have the animals names written on them as well as their ID #. My concern comes in when the cats are in the open cat room. There have been 2 seperate incidents that I witnessed where 1 cat was choking as it had gotten the collar wrapped around his head and neck and last week-end where the collar was stuck in the cats mouth. What type of breakaway collars are used at other shelters? Also, where can I locate a distributor where I can purchase a number of these at a reasonable price? Any suggestions would be greatly appreciated! I plan to buy these myself and donate them to the shelter. Leslie Raynes