They came to south Florida in a quiet, undetermined way, and are making a name for themselves. They are short and stocky and full of fight. When they strike, they hit hard. These hardy fish, ...

The phenomenon of adoption has taxed the minds of evolutionary scientists since Darwin first came up with his account of natural selection. According to Richard Dawkins's description, adoption is "a ...

Cuckoo catfish may be the worst parents ever. Rather than raising their own cannibalistic offspring, they force other fish species to raise them in their own mouths. But how do they do it? New ...

For a variety of reasons, many humans choose to adopt children. More surprisingly, adoption is fairly widespread in the animal kingdom, even though it would seem to counteract the basic premise of ...