MY correspondent, Mr. H. Prestoe, has taken the trouble to examine the collections at the Natural History Museum, and by so doing has identified the bipedally-running Diamond Lizard of Trinidad, ...

Why bother running on hind legs when the four you've been given work perfectly well? This is the question that puzzles Christofer Clemente. For birds and primates, there's a perfectly good answer: ...

Darting lizards swing from four-legged to two-legged locomotion like a road bike popping a wheelie, a study published today in Journal of Experimental Biology suggests. "It's a very interesting paper, ...