Pixar you did a GREAT, REALLY GREAT JOB! Idek why people hate this movie. Are these people even have a heart? they don't even care about this question. But tbh, at first Arlo makes my blood pressure higher than normal. He represented a weak boy, scaredy coward, and bc of that, he lost his father. DON'T EVER SAY HIS FATHER IS A BAD EXAMPLE OF PARENTS! His father did a good job to make sure he can survived in this cruel world by facing the problems. His father did a good job that Arlo need to accomplish the problems by his (arlo) own. In the end, Arlo became a brave dinosaur not coward like he used to. And whoever said the side characters aren't developed bc Arlo the only character who needs to develop himself. This story also only about Arlo, not the side characters.
P.s. Sorry for my bad grammar since English isn't my native