Casting was critical to the film’s success. The absurdity comes from thinking you’re watching a man or a woman talking about his or her own wants and desires. Until you realize that you haven’t been watching a human. You’ve been watching and listening to a dog. Or a cat. We spent 5 days, for a total of 10 sessions looking for people that could convey the emotions, wishes and desires of the pet. It wasn’t about finding actors who looked like a specific breed of dog or cat as much as it was about finding actors who could make you want to look at them. They were the emotion, the feeling that exists inside a specific pet. We looked to match the personality of an animal. And, in some cases, the age. The important thing was the humans acted like humans, the pets, like pets.