Dryosaurus are gentle, timid herbivores. They are preyed upon by many carnivores due to their small size, and run away from most predators. When hungry, they seek out and eat plants or food in feeders. Dryosaurus is diurnal, and sleeps during the night.
If there is both a Male and Female adult Dryosaurus in a small area they can breed every few minutes.
Dryosaurus automatically eat plants when they are hungry. They will also eat from a Feeder if they can see them. Dryosaurus can be hand-fed wheat, apples, melons, carrots, sugar, sugarcane, cookies, potatoes, cake, any seeds, ferns, and bread.