Our newest cat can not seen to keep his collar on. I am guessing he loses them when he gets caught on something as it does not seem to bother him in the house and he can go weeks without lossing one. We really want to keep ID on him because we do not trust our new neighbors who we believe maybe taking our older cat into their home. Very long story...he sometimes even stays out all night and he has never done that before. Then when he comes in he is not hungry, which is also not like him. Anyway, the older one keeps the collar on just fine. So, we want to make sure the younger one has some form of ID. We are also planning on talking to the neighbors about it if they ever answer their door. The Sheriff came around a while back and they never answered the door for him even though he said they were in there. Any suggestions are appreciated. We will try anything.