To the best of my knowledge, no other animals with two feet can’t walk at all. However, some interesting cases of animals have limitations in their walking abilities. For instance:  > Kangaroos and Emus: While they can walk forward, they have difficulty walking backward. Their strong hind legs are well-adapted for hopping and running, but the structure of their legs makes backward movement challenging. Additionally, people often mistake kangaroos for animals that have two feet but can't walk. However, I have found that kangaroos can occasionally walk on all their four legs and tail. For more information, please read this page. > Roadrunners and Ostriches: These birds can indeed walk, but their walking style might be mistaken for running due to their fast and big strides.