The wikipedia list of animal names was created from dictionary.com, Merriam Webster, and various other sources. These are the common species/taxon names that are four letters long.
The list was from a Wikipedia source below. If you find other animals, let me know and I will gladly add them!
I wonder why none of those are listed on the source site I used. I looked at several source sites and picked the one I thought was most comprehensive. You did a nice job of finding lots more four-letter creatures!
Thanks for taking my quiz. I was such a newbie when I made this. I wonder if it would be better if I removed it from the site? It's not fun to take a quiz that really isn't complete!