http://en.wikipedia.org/wiki/Hoary_marmot http://en.wikipedia.org/wiki/Mandrill http://en.wikipedia.org/wiki/Lungfish The only difficult one so far is the blendec, which the entire internet has never heard of (it seems to be a brand of blender)
Apart from this omission i see no reason why we need complex descriptions ingame when we can get an entire page of writing and a full colour image from the internet. It's the same as with the minerals, if every time you [k] over a piece of granite it said:
"Granite (pronounced /ˈɡrænɪt/) is a common and widely occurring type of intrusive, felsic, igneous rock. Granite has a medium to coarse texture, occasionally with some individual crystals larger than the groundmass forming a rock known as porphyry. Granites can be pink to dark gray or even black, depending on their chemistry and mineralogy. Outcrops of granite tend to form tors, and rounded massifs. Granites sometimes occur in circular depressions surrounded by a range of hills, formed by the metamorphic aureole or hornfels.
Granite is nearly always massive (lacking internal structures), hard and tough, and therefore it has gained widespread use as a construction stone. The average density of granite is 2.75 g/cm3 with a range of 1.74 g/cm3 to 2.80 g/cm3. The word granite comes from the Latin granum, a grain, in reference to the coarse-grained structure of such a crystalline rock."
It would create a lot of meaningless and unnecessary clutter in the game.