When larger animals like sea lions, dolphins, and even humans eat these contaminated fish or shellfish, they too ingest the toxin. (It can be fatal to humans in high doses.) Even chronic ...

(See National Geographic's most stunning pictures ... And, with only about 600 animals left in the wild, Asia’s last lions need all the help they can get.

Pictures of two "male" lions mating in the wild have made a sensation online, but the truth may be even more intriguing. One of the photos shows the two animals rubbing their heads against each ...

(See National Geographic's photos of animals on the Galápagos Islands.) Sons More of a Burden? All this diving activity wasn't just for the sake of diving practice either—the juvenile sea lions ...

(See 15 intimate portraits of lions.) Unlike other males at the ... president of the big-cat conservation group Panthera, told National Geographic in 2012. "Alternatively, and perhaps more likely ...

That year, 1898, was also a drought year, and though injury by the quilled critters doesn’t appear to have driven the lions toward human-hunting in this case, it suggests that the animals were ...

Ryan Reynolds talks up nature's underrated animals in the trailer for National Geographic's Underdogs. Watch it here!

Sea lions do not often attack humans ... helping nerves to fire," said National Geographic. When the acid "binds to the receptors, it stays there longer than glutamate would, triggering the ...

Beware of mountain lions in US national parks; although relatively uncommon, they are elusive predators that prefer to avoid ...