The story of dingoes in Australia is the first recorded case where an introduced predator has taken on such a functional role in its adopted ecosystem.

Fish intelligence? Yes, many studies have documented the ability of fish to learn from their environment. Fish exposed to a more complicated environment have an edge in learning.

Alarm calls truly display the complexity of animal communication. Chimps tailor their warning communications based on the knowledge level of the recipient.

Every year, thousands of American eels make an amazing migration from their freshwater homes into the Atlantic Ocean, where they spawn and die.

If crows like the New Caledonian Crow can plan out and create a specialized tool, then they seem to have smarts that rival those of early humans. 

A mild winter and abundant mice have led to a bumper crop of ticks this year, and with them tick-transmitted diseases including Lyme disease.

A team of researchers is making one last attempt to find a living Thylacine, or Tasmanian Tiger, 30 years after its official disappearance.

Are the increasing jellyfish blooms in our oceans the result of global temperature changes?

The Ili Piku, aka "Magic Rabbit," of China is endangered. But Pika populations are declining globally, not just in China.

What is the point of menopause? Evolutionarily speaking, why do female humans go through menopause and then live for many more decades?