Basic information about the species. What are they? Where did they come from? What makes them special?
The history of the species. Feel free to go into more detail than there is in the Bestiary on the site.
Explain the culture of the species. Do they have any beliefs? Customs? Superstitions? You may also want to expand on the social interactions from your Bestiary entry here.
What do they look like?
How do they reproduce? Can they? Can they reproduce with other species?
What can they do?
What are their weaknesses.