I am thrilled to announce that, due to a fortunate confluence of factors, a new edition of The Camel, The Hare, And The Hyrax is going to press next week! This new edition contains much new material throughout the book and has been fully revised. Click here to go to the book's webpage where you can pre-order it at a steep discount.
B'ezras Hashem, the book will be printed in time for me to bring a number of copies to the US at the end of July. However it will probably not reach the stores in the US until September. Daf Yomi is getting to this topic in mid-August.
Below is a video of a hyrax engaged in the mysterious behavior that certainly looks like rumination. What it is actually doing, nobody knows.