Simba Junior Goes to New York (1997)

Winner the dog is kidnapped and taken to New York City by a woman who thinks he is lost in the Jungle. But thanks to Arbor, the tree, Simba Jr. and the other friends manage to follow Winner's trail. After an exhausting search, Simba Jr. and his friends discover a parallel world in the New York underground where all the abandoned animals live. There they find Winner and a new adventure begins.