Dangerous Mammals, Reptiles, Amphibians, Birds, Fish, Jellyfish, Insects, Spiders, Crustaceans, Grasses, Trees, Mosses, and Lichens of Terror Incognita

Mentioned in The Last Continent, this encyclopedic work tells us of some of XXXX's dangerous flora and fauna. It consists of at least 29 volumes, further broken down by letter and part (eg, Volume 29c, Part 3).

Death reflects that it might have been a great deal easier to request a list of the harmless Mammals, Reptiles, Amphibians, Birds, Fish, Jellyfish, Insects, Spiders, Crustaceans, Grasses, Trees, Mosses, and Lichens of Terror Incognita.

This turns out to be a slip of paper with four words written on it:

Some of the Sheep!!!!!!!!!

Note it's only some of them!