Walking upright is harmful to a cat's skeletal health. Because a cat's body structure and behavior are not suited to upright walking, doing so over a long period puts extra pressure on their spine, potentially leading to various skeletal problems. Cats occasionally choose to walk upright to raise their field of vision, entertain their owners, or when startled or wanting to display their strength to ward off enemies.
In addition, cats may choose to walk upright while playing, but these behaviors are not normal. If cat owners notice their cats frequently walking upright, it is recommended to take them to the vet for a checkup as soon as possible.
