Chris Sanders wrote and directed the movie. He and lead animator Jakob Hjort Jensen brought the story to life. The art in the book is black and white. It has a dreamy cartoon style. But Sanders and Jensen wanted to make the movie more realistic. They started with the animals.
Sanders and his team had animated animals before. But in other movies, the animals do things humans do, like drive cars and work at jobs. “This is the first film where we got to work on animals who are animals,” says Sanders. “It has been absolutely fantastic.”
The team spent hours watching film of animals. They wanted to understand how real birds and bears move and behave. “It was important to us to inject as much animal behavior into the characters as we could,” says Jensen.
The movie’s overall style is realistic too. The filmmakers used new technology to make it look more like classic animation. Animators used to draw thousands and thousands of images by hand. Modern tools save them hundreds of hours of work. But there’s still a human touch. “Every background is digitally hand-painted,” explains Sanders. The result can look as real as a photograph!