Poison dart frog
What makes poison dart frog resistant to their own poison?
Poison dart frogs store Batrachotoxin, a steroidal alkaloid toxin in their skin glands. A single amino acid substitution is responsible for the resistance to their on poison in these frogs.
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Hitchhiking beetle
Nymphister kronaueri is a tiny beetle that lives among ants. The beetle uses its tiny mandibles to clamp down on its host’s abdomen as the ants move. This makes it look like the ant has two abdomens.
