Pumped / Dummy, Dummy

S1 E4: Cat begins to work out furiously in order to stand up to the Greaser Dogs, who even stole CatDog's frisbee.  Not getting the results he'd hoped for, Cat trains Dog instead, encouraging him to scarf down cans of Choco-Muscle protein drink.  Pumped up Dog gets their frisbee back, but can't control his rage and is about to pummel the terrified Greasers when Cat convinces him that violence is no way to solve problems.Dog becomes attached to a small toy cat he has purchased and decides to name it Little Cat.  Cat realizes that Dog's friendship with Little Cat is pushing him out of the picture.  He conspires with Winslow to get rid of Dog's new friend.  Ultimately Dog chooses Cat, realizing that a toy could never replace the real thing.