Typically, animal skin appendages including hair, feathers, and scales are controlled by specific genes when an embryo is developing. There are some exceptions to this rule–including in crocodile ...

Did you know crocodiles and alligators can be born without tails? The crocodile in this incredible Instagram video has a congenital anomaly called “amelia,” which refers to the absence of a limb or ...

How can we explain the morphological diversity of living organisms? Although genetics is the answer that typically springs to mind, it is not the only explanation. By combining observations of ...