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As water sources in rainforests become polluted due to growing industries and many other factors, the endangered poison dart frog has to make adaptations to survive. No longer needing to stay near water sources, these amphibians start drinking water with their springy tongues. Instead of having colorful skin, they are a dark brown color, helping them blend into their new habitats; underground. To catch their prey, these poison dart frogs now have retractable, sticky claws, along with longer limbs. Those claws paired with its limbs make hunting, lunging and digging an easy task. When in extreme danger, their skin excretes the same toxin that gave them their name, a substance enough to kill 10 grown men.