Dr. Dolittle 2

Generally, when a large variety of animals appear in a scene together, like the animals rallying in the woods, the individual species were filmed separately using a technique called motion control. A camera was set up and ran continuously as animals of each species were brought into the scene and placed on their mark by a trainer, then removed so that the next species could be set into position. When editing was complete the scene appears as if the camera was merely panning a single area filled with all manner of wildlife, standing in harmony at their union meeting.

John calls an opossum a rodent. It is a marsupial.

At the end of the movie, besides the music, some of the animals have some small extra parts during the credits.