Heathcliff and the Catillac Cats

Spike's New Home [Heathcliff] (2x9)

:

Heathcliff interrupts Spike's bragging session by beating him up. Muggsy disowns him and Spike is left to fend for himself. Iggy takes him in until he finds a new owner, so Heathcliff and Spike are forced to live together.