The story concerns a fearful, clumsy young apatosaurus named Arlo (voiced by Raymond Ochoa) who gets separated from his family and makes his way back home with the help of a feral caveboy whom he befriends. (theatlantic.com)
At its most basic, the movie is about a boy and his dog except in this case the boy is a young Apatosaurus named Arlo (voiced by Raymond Ochoa) and the dog is a young grunting human boy who Arlo calls Spot (Jack Bright). (rogerebert.com)
The film is a humorous and exciting original story about Arlo, a lively Apatosaurus with a big heart. (metacritic.com)