Males have an evolved 'search image' for the most common local female morph — as morph frequencies shift, male preferences shift to track them.
Living army-ant bridges self-optimize — the colony continuously dismantles bridges that don't carry enough traffic to be worth the labor.
The spray nozzle is a rotating turret on the tip of the abdomen — aimed precisely at attackers.
Botfly eggs hatch when they sense the warmth of a host's skin — meaning the eggs only release when the moment is right.
The myth that 'bumblebees can't fly according to physics' was debunked in the 1990s — they generate lift using vortex-shedding wing motion identified by high-speed video.
Among scorpions, small claws + thick tail = high venom potency. Deathstalkers have thread-thin pincers — the venom does the work.
Each dragonfly compound eye has 30,000 facets and provides nearly 360-degree vision.
