Add Yahoo as a preferred source to see more of our stories on Google. A curled up hagfish on the sandy sea floor. At first glance, these primitive fish are striking thanks to their unusual appearance.

(PhysOrg.com) -- A new study in Canada has shown that the primitive fish called the Hagfish, which has the habit of burrowing into dead or dying creatures on the sea bed, eats by absorption through ...

(Roy Toft / National Geographic Stock) Spider monkeys have complex behaviors that vary from group to group, according to a comparison of five isolated populations in Central America. In some groups ...

Hagfish and lampreys form the clade cyclostomes, the earliest branching lineage of the vertebrates. Although hagfish are generally assumed to have experienced intense modifications, its brain ...