I'm in tears right now and my thumb is about to die. This just happened like 10 minutes ago. I was sitting at my desk doing some homework and the dogs are in here with me playing. I had just taken my oldest Apollo out to pee and poop and I didn't take the collar off right away. Well all the sudden I hear Riley screaming and he's under Apollo screaming in terror. I yell and say "Hey!" cause I thought APollo was biting him. Well as I went over there to pull Apollo off I noticed he was being really still and Riley was still yelling. Riley's lower part of his mouth, his jaw was entangled in Apollo's martingale collar and it was twisted. It was twisted so tight it was cutting off circulation where it was twisted on Riley's jaw. It was caught just behind the lower canine's. Luckily Joseph is here with me so I was able to find some scissors and them come hold Riley up so he wouldn't pull down to make it tighter. My thumb was in his mouth to hold his mouth open. He kept biting down and the blood vessels in my thumb broke. My entire thumb is blue. The scissors weren't working because the collar is really thick. Thank God the collar finally untwisted. I also think Apollo realized something was very wrong so he got really still and just stood there. I am just so happy everything turned out okay because if we weren't able to get it off I don't know what I would have done.