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About Kerodon
Mathematics
Kerodon is an online textbook on categorical homotopy theory and related mathematics. It currently consists of a handful of chapters, but should grow (slowly) over time. It is modeled on the Stacks project, and is maintained by Jacob Lurie.
Its infrastructure uses Gerby, which is maintained by Pieter Belmans. The design was created by Opus Design.
In the animal kingdom
According to Wikipedia:
The genus Kerodon contains two species of South American rock cavies related to capybaras and guinea pigs. They are found in semi-arid regions of Northeast Brazil known as the Caatinga. This area has a rocky terrain with large granite boulders that contain rifts and hollows where Kerodon primarily lives.