WAG Moo Tubes are made from 100% windpipe and are sure to get your doggos howling. Theyre ideal for puppy teeth, with a long-lasting crunch to munch through the day. Moo Tubes are overloaded with glucosamine which means healthy joints for an active pooch. So put your right paw in, put your right paw out and shake it all about. Fill your Moo Tubes with peanut butter or hide more treats inside it to make treat time even more fun!