Running gags in this episode: 1. Yin and Yang keep arguing over Lena. 2. Whenever Lena, Yin and Yang try to communicate with humans, nobody understands them. 3. Everybody is continually surprised to talk about Lena actually being a dog! 4. Jason Earles and Mitchel Musso have a rivalry with each other to determine whose hair is more awesome (at least until it's removed by Carl.) 5. Yin, Yang, and Carl continuing to be shocked over the way Earth versions of their respective animals are treated. 6. Every human being scared of the realistic looking Carl and his huge cockroach army. 7. Yin, Yang, Carl, and Lena transforming into realistic animals. 8. Carl accidentally insulting real world cockroaches. 9. Jason Earles and Mitchel Musso keep calling each other by their full names. 10. Yang being unable to hold his sword when his paws change.