The Family Farm is the home of Arlo and his family, as well as the place where he and his siblings, Buck and Libby were born.
Henry and Ida had lived and worked on the farm on their own until three eggs, that contained their children hatched. Buck, Libby and Arlo were taught how to work and care on the farm by their parents; and not long after the silo was built they started the tradition to place their marks on it once they have complete their tasks and earned their place on the farm. Since Henry and Ida were the first to work on the farm they were the first to places their marks on it, Buck and Libby soon followed while Arlo was struggling.
When the corn in the silo was being eaten by a "critter" Henry used the opportunity to help Arlo earn his mark on the silo, however Arlo was hesitant to hurt him and let him go. When Arlo and Henry went after it Henry restored Arlo that he can find his way home by following the river, but them a storm Henry got Arlo to safety and got swept away by the river. Winter was drawing in fast and Ida was worried that they wouldn't have enough food to survive it without her late husband's help, but Arlo managed to reassure her as he told his mother that he'll do what ever he can to help. Arlo later spotted the critter from earlier and went after him, which got him swept away from the farm by the river.
Following his father's directions of following the river and heading towards Clawtooth Mountain helped Arlo find his way home and back with his family. As he had "token care" of the critter Arlo was finally able to place his mark right next to Henry's.
Soundtracks:The Good Dinosaur Video Games:Disney INFINITY: 3.0 Edition • Dino Crossing Books:Read-Along • Hello, Arlo • Golden Book • A Friend in the Wild • The Junior Novelization • The Journey Home • Spot Leads the Way • Creatures and Critters! • Crash, Boom, ROAR! • A Wild Adventure! • A New Best Friend • A Berry for Arlo • A Boy Named Spot/A Dino Named Arlo • Big Golden Book