The puppy in the film was a real star he was starting to cry when the director said action and stop when he heard cut.
Praline (lead dog) was scared to get into the cage - the animal trainer sit down in the cage with her. The training did go for 3 months before Praline feel secure with a camera on her back and start to like going back to the SPCA.
All the animal in the film had found a family after the filming. The first one to leave was the puppy.