Exactly the same thing happened to me several years ago with two of my previous poodles. I was in another room and heard Ashley (mini poodle) yelping and came running to find her hanging by her lower jaw from Whitney's (standard poodle) collar. It was easy to get Ashley's jaw out of the collar (after I stopped shaking!) as it wasn't twisted. After that incident neither wore collars 24/7. I shudder to think what would have happened if I hadn't been home.

Bella does not wear a collar in the house but Ripley does. I have three reasons for this. 1) Ripley was originally a stray when I got him and doesn't have a good recall other than in the house and the back yard. 2) Ripley is the one to initiate that type of play with her so he would be the one likely to latch onto a collar and 3) Bella is larger so if, God forbid, she did get into that situation she would not be hanging.

It is amazing the trouble that dogs can get into!