As Renzo reached a far enough place and he couldn't detect any more scents that came from human, wolf or tiger he put the tube down. "Now... let's see here..." He examined it and saw the arc like thing on the bottom. He tried to reach out to it but he couldn't simply because his paw couldn't fit. He sat down. "Now... if I remember correctly..." He muttered to himself while looking at the arc like thing. He saw the humans with their hands in it so is it possible that that thing is used to make the tube pop?