Dragonfly

A hungry fish can kill prey with a quick bite. That is, of course, if its prey hasn't already died of fright. Take tasty dragonflies. The mere [presence:substance] of predators - even caged ones - is enough to scare [dragonflies:ants] to death, [according:following] to a study in the journal Ecology. Researchers collected wild dragonfly larvae and placed them in tanks with fish or insect predators. The larvae could see and smell their hunters - but were kept safe by underwater cages.After two months, the researchers took a head count - and found that dragonfly larvae [sharing:staring] quarters with their killers were two to four times as likely to die off, [compared:featured] to [counterparts:hindering] living in predator-free waters.