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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Japanese Spider Crab
The Japanese spider crab has the greatest leg span of any arthropod, reaching up to 5.5 m from claw to claw. This crab was known to the Japanese for the serious injuries it can cause with its strong claws.
