When necessary, they can stand and move around on two legs with some degree of proficiency.
Although they usually move on all fours using their knuckles, gorillas may briefly stand and walk on two legs.
They are frequently observed standing and moving on two legs as they scan their environment for potential predators.
Usually driven by curiosity, the need for a better perspective, or the need to reach for food, bears are able to travel short distances on two legs.
Although they usually perch or cling to objects with their feet, cockatoos can walk on two legs in pursuit of food.
Although they spend most of their time in water, flamingos can walk on two legs on land, utilising their webbed feet as support.
Using their flippers for balance, penguins walk upright on two legs when they are on land.
When necessary, like when sprinting through dense vegetation, they may stand on two legs.
When looking for food or defending themselves, they walk and run on their two long, strong legs.
When they wish to intimidate someone or stand for brief periods of time, they may walk and stand on their muscular hind legs.