LINK:
Monstrous Master IndexYou'll have to play around with it a bit to get this to work smoothly, and it is not perfect. For example, say you wanted to find creatures from the desert terrain...
1) Click on the link above
2) At the bottom search window, to the right of "Find", type in the word desert
3) Set the drop down menu for "words in" to "Climate"
4) Set the drop down menu for "sorted by" to "Climate"
5) Click search