Sitting or sleeping can be done with the 'R' key. If the player tries to perform any actions while sitting or sleeping their dinosaur will stand up. Some dinosaurs can call while sitting.
The Resting button will only show up on the user interface if your dinosaur species can sit or sleep.
Dinosaurs cannot sit or sleep if they are swimming or flying.
Dinosaur hunger and thirst rate decreases while sitting or sleeping.
Dinosaurs restore twice as much health while sitting or sleeping.
While sitting or sleeping dinosaurs take half of their bleed damage and recover from bleeding twice as fast.
While sitting or sleeping dinosaurs take half of their food poisoning damage and recover from food poisoning twice as fast.
The dinosaurs that can sit, call while sitting, and sleep are: Ankylosaurus, Argentinosaurus, Brachiosaurus, Gallimimus, Iguanodon, Kentrosaurus, Ouranosaurus, Parasaurolophus, Protoceratops, Stegosaurus, Styracosaurus, and Triceratops.
The dinosaurs that can only sleep are: Baryonyx, Carnotaurus, Compsognathus, Dilophosaurus, Dimetrodon, Dimorphodon, Oviraptor, Pachycephalosaurus, Pteranodon, Quetzalcoatlus, Spinosaurus, Troodon, Tyrannosaurus, and Velociraptor.