The Penguins of Madagascar
All King, No Kingdom/Untouchable
S1 E19:
The lemurs argue, and Maurice and Mort move out of the habitat. Lonely Julien starts bugging the penguins, who decide they must get the lemurs back together. A tiny frog with a nasty attitude moves to the zoo and starts terrorizing the animals.
Starring
Tom McGrath, Jeff Bennett, John DiMaggio