The smearwort (Aristolochia rotunda) dupes fruit flies into entering its flowers and then traps them there, getting pollinated without offering any reward.

BIOLOGY
South Africa’s samango monkeys live on what ecologists call a “vertical axis of fear.” They live and eat in trees, and if they climb too high looking for food, they’re liable to get attacked and eaten by an eagle. If they venture too low, it’s leopards an
The red shiner is just a few inches long, and has no big scary fangs, no claws, no stinger and no poisonous spines. The little minnow probably isn’t an animal that would ever strike fear in anyone’s heart, but it’s a fierce conqueror.
Chemical warfare. Hijacked communications. Stowaways. Eavesdropping. Sounds like the makings of a spy movie, but it’s just another day in nature.