“The fact that these juvenile bats respond so strongly to some of these toad calls really does tell us that they must be changing their strategy over time,” James said. 0:34 Learning to eavesdrop ...

Males give a short "scream" in aggression, and females "shriek" as a mating call. Photograph by Robbie George, Nat Geo Image Collection. WEIRD & WILD; These animals’ screams will chill your blood.

This is how a Freudian slip turns into a newspaper column, folks. An accidental flub of speech set off a couple mental light bulbs the other day. Given the current ...