The iconic Nile crocodile actually comprises two different species — and they are only distantly related. The large east African Nile crocodile (Crocodylus niloticus) is in fact more closely related to four species of Caribbean crocodile than to its small west African neighbour, which has been named Crocodylus suchus. Leer más.

This female Anolis carolinensis has a tail that is kinked in a zig-zag fashion, starting from what seems to be the proximal autotomization point and continuing distally along the tail. Leer más.

The Western Ghats region in the country, a global biodiversity hotspot, has opened up more of its secrets — this time a dozen species of night frogs hitherto unknown to science. Leer más.

This textbook covers the broad sweep of animal behavior from its neurological underpinnings to the importance of behavior in conservation. Leer más.

In a new study appearing Sept. 15 in the journal Palaeontology, University of Florida researchers describe a new 20-foot extinct species discovered in the same Colombian coal mine with Titanoboa, the world’s largest snake. Leer más.