Several animals rarely, if ever, sit. The references provided highlight two such animals.
Based on the reference:
- Horses: While horses can sit, they primarily sleep standing up. They might sit on their hind legs in a "dog style" position for short periods, but prolonged sitting is unusual.
- Giraffes: Giraffes also rarely sit down, primarily due to the risk from predators. They are vulnerable in a sitting position and prefer to sleep standing.
Therefore, both horses and giraffes spend the vast majority of their lives standing, making sitting an infrequent behavior. It is difficult to claim that they never sit, especially for horses. Giraffes are closer to never sitting because of predator risk.