Dug Days Episode 5 Science Episode Title:Science.Episode Description:Russell uses some of the special collars created by Charles Muntz to do experiments in other animals by allowing them to have their own voice, this makes the squirrel and a blue jay to be able to speak with Dug, when he learns about the needs each one has because they live in the wild, this makes Dug understand their feelings and remembers the days when he was expelled from Muntz's dog pack and finally shares a sandwich Russell gave him while Russell and Carl watch him in approval. Later that night Dug asks Carl if he is only a pet. While admitting that he is a pet, Carl affirms that to Dug that he is also his best friend.