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🦇 Co-Evolutionary Arms Races

When predator and prey evolve to outdo each other, nature stages an arms race. Follow poison-versus-antidote newts, speed-chasing cheetahs, and the ultrasonic duel between bats and moths.

lessons

~15 min

to learn

🔬 Science

subject

Ages 6–12

level

Start the course →

What you’ll learn

The Never-Ending RaceDefine coevolution and a coevolutionary arms race using predator-prey speed as an example.Coevolution is when two species evolve in response to each other. When a predator and prey keep pushing each other to improve, it becomes an arms race. Cheetahs evolved great speed, and gazelles answered with sharp turns and zigzags. Neither side wins for good.
Poison and AntidoteExplain how escalating poison and resistance drive an arms race between newts, snakes, and plants.The rough-skinned newt carries a powerful skin toxin. Where garter snakes evolved resistance, newts with stronger poison survived better, pushing snakes to resist even more. Plants play too: milkweed makes toxins, but monarch caterpillars evolved to eat them and store them for their own defense.
The Sky BattleDescribe the arms race between echolocating bats and the moths that evade or jam their sonar.Bats hunt in the dark using echolocation, sending squeaks and listening for echoes. Moths fought back: many evolved ears to hear bat calls and dive away, and some make clicks that jam the bat's sonar. Across land, water, and sky, arms races produce nature's most amazing abilities.

Questions this course answers

What is a coevolutionary arms race?

A coevolutionary arms race is when two species keep evolving in response to each other, each new adaptation driving another.

How does a gazelle answer the cheetah's speed?

A gazelle cannot outrun a cheetah in a straight line for long, so it escapes with sharp turns and zigzags.

Why do the rough-skinned newt's poison levels rise over time?

As garter snakes evolve resistance, newts with stronger poison survive better, so poison levels climb over generations.

How did monarch caterpillars win their arms race with milkweed?

Monarch caterpillars evolved to eat toxic milkweed and even store the toxin, becoming poisonous to their own predators.

How do bats find moths in the dark?

Bats use echolocation: they send out high squeaks and listen for the echoes bouncing off insects like moths.

What is one way some moths defend against bats?

Some moths can hear a bat's calls and dive away, and a few even make clicks that jam the bat's sonar.

Grounded in trusted sources

National Geographic
Britannica
BBC Earth
Smithsonian

Every Wunder lesson is built from real, reputable sources — never invented.

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