These creatures really know how to show off by puffing themselves up.
Despite their incredible adaptations to being underwater, animals such as dolphins and seals are physiologically challenged by holding their breath while exercising.
With the Washington, D.C. area getting its first snowfall, the Smithsonian Zoo had to shut down, giving the animals their own private play day.
Weddell seals may use Earth's magnetic field to navigate among the holes in the ice it needs to find in order to breathe.
In honor of the all-consuming quest for good deals on the shopping spree known as Black Friday, we present animals for whom every Friday is that color.
More than 1,000 mutilated marine mammals thought to have been victimized by humans were attacked by another marine mammal with a cuddly reputation.
At first it was thought that sex between animals of different species was a case of mistaken identity, but new research suggests otherwise.
Acoustic tags used to study animals can function like a dinner bell, drawing hungry predators.
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