There can also be occult polydactyly, which means the foot looks normal externally, but when it is x-rayed, you can see the extra bones. One of the most common issues for cattle with polydactyly ...

He says he was born with an extra toe on his right foot, meaning he has polydactyly. Here’s how this anatomical variation occurs, and how common it really is. Let’s start in the womb ...