Sheep go nude at French festival

Scientists study sea turtles to understand long existence

Cancer strikes sea lions

Infographic: Top 20 countries with most endangered species

Diver saves shark trapped in Frisbee

PETA slams circus for tiger abuse

Florida opens python hunting season

Guinea pig meat improves food security in Congo

Giant George is world's top dog

Mouse given a human liver

Elephants impress with mental prowess

100 years of forest fragmentation is forcing birds to evolve