Lady and the Tramp II: Scamp's Adventure

"Lady and Tramp's mischieovous pup, Scamp, longs for the wild and free lifestyle that his father once had as a stray, so he runs away from home and into the streets where he joins and grows up living with a pack of stray dogs known as the 'Junkyard Dogs.' Buster, the pack's leader, takes an instant disliking to the 'house-dog', and he considers him a rival. Will Scamp choose the wild and free life of a stray or the unconditional love of his family?" --from IMDb