Sumatran orangutans remain critically endangered, but their numbers are higher than thought.
The parasite doesn’t seem likely to cause symptoms for deer or humans.
But they may help ward off biting flies.
The puma was shot after it attacked a hunter’s dog.
The fish are considered vulnerable to extinction.
The animals are close to reaching the Great Lakes.
The finding could have applications in other animals, including humans.
This is only the fourth known kind of infectious cancer.
A hybridized canid made up of coyote, wolf and dog genes is expanding across the eastern U.S.
The algal toxin has sickened and killed humans before.
Animals produce more waste than humans, but it isn’t processed much at all.
The snail was found in northeastern Borneo, a hot spot of biodiversity.
The creature has a strange-looking, horseshoe-shaped structure on its face.