In a darkened forest of central Colombia, a 2-foot-long mammal climbed a tree and paused to rest its “completely spiny” body.

In a river of northeastern Brazil, an “armored” creature with “large” eyes paused to rest against a rock. The maze-like ...

There are only 10 or less of this little porpoise species left in the world. What can be done to save the vaquita?

A new study observed Amazon river dolphins for 218.9 hours and saw males spurt urine into the air 36 times—proof that the ...

Scientists are perplexed by a strange new behaviour shown by the Amazon river dolphin of flipping belly-up to urinate with ...

Specifically, the male dolphins rolled over onto their backs, displayed their male members, and launched a stream of urine as ...