Kid vs Kat
When Bad Dogs Go Big/The Bottyguard
S2 E10:
Growler swallows a Kat device which makes him grow to the size of T-Rex, and then eat everything in sight - including Kat, Coop and Dennis. Coop and Dennis find a broken robot, and when they mend it, the robot decides Coop is its new master, but it becomes over-protective.