Every author knows the feeling. Once the book is done, you find something amazing that you wish
​you had known about.  

In COOL ANIMAL NAMES, I wish I would have known about orangutan crabs, cat geckos, mouse lemurs,
sloth moths, and poodle moths 

In ANIMAL EGGS, if only I had found a photo of a 
peacock mantid shrimp and its pink eggs — wow. 
​And how about this yellowed jawfish mouth-brooding
its eggs?