Per the reviews of some of the toys, we learned the extra "loop" is to attach the toy to the collar. We weren't quite convinced but decided to try anyways and it was HILARIOUS. It really made it more of an amusing challenge to watch our pup attack the toy. The downside was only one corner was accessible, and by focusing on the at corner it tore pretty quick. The hidden pancakes was a great added bonus, and he really didn't care about them until the "bottle" was shredded. No doubt that this wouldn't have lasted long without attaching it to the collar. Pancakes were destroyed instantly. I'd buy a collar toy again, but maybe a smaller one to make it even harder. For reference, we have a 35 pound lab/terreir mix.