The first-ever images of a living giant squid in the wild have been captured by Japanese scientists.

Researchers in Idaho have found a way to use sheep to rid vast swathes of U.S. sagebrush lands of invasive weeds.

A new, highly contagious respiratory virus thought to affect only the greyhound racing industry is now being detected in family dogs.

Chameleons change their skin color to hide and to communicate. But why do the tropical lizards turn pale at night?

A midnight survey has shed light on a surprising success story for the national black-footed ferret reintroduction program.

Kings of the corporate jungle may survive by using conflict and cooperation techniques honed by their primate relatives.

A new genetically modified plant attracts helpful bugs that attack pests, a development that could one day reduce the need for chemical pesticides.

Ants with an acid bite can kill some plants and cultivate others, creating phenomena known as devil's gardens, a new study suggests.

Animal welfare groups met with Congress yesterday to discuss how lessons learned from Katrina might improve the way animals are handled during disaster response.

The majority of species in danger of extinction are humble insects, a new study argues. Up to 44,000 types of bug could have been lost during the last 600 years.

In South Africa nonnative triffid weed threatens to overrun a premier nature reserve, displacing rare black and white rhinos.

Female greater horseshoe bats may choose one mate for life, and even share him with their daughters and granddaughters, creating a tight social structure.

After more than a decade of searching, a wildlife researcher has captured proof of a white giraffe living in Tanzania's Tarangire National Park.

Conservation biologists have recruited sophisticated satellites to help discover and protect unknown species before they disappear.

Fearing that a deadly strain of avian flu may be spreading from Asia to other parts of the world, bird experts in Alaska have been testing migratory ducks for the virus.