"This condition is genetic and shortens a cats radius–the long bone between a cat’s elbow and wrist.
Cats with this condition tend to support themselves on their back legs so that harmful stress is not placed on their spine. This posture is what led RA felines to be referred to as “kangaroo cats,” and it also inspired the naming of Kanga!
According to Holly, Kanga “gets around great and is a happy girl,” despite her leg condition."
See more about Kanga HERE