Add Yahoo as a preferred source to see more of our stories on Google. Animals, like humans, can also be born with birth defects and deformities, such as an extra hoof, multiple "toe beans," or extra ...

How can a creature of such enormous size and long-distance migratory behavior cope with a spine twisted in multiple directions? (Whale shark with the spinal deformity not pictured.) Photo by Jenna ...

Joint deformity can occur in various joints but are most common in the hands and feet. Causes of joint deformity include injury and degenerative conditions such as osteoarthritis. A joint is where two ...