Basically the title. I once saw a documentation and one zoologist said that posion dart frogs loose their poison when kept in a zoo for example. Why is that?
In: Biology
Nobody is actually 100% sure. As others have mentioned it is because of their diet but feeding them the exact same things in captivity still makes them poison free. It appears that the vegetation or some other environmental condition affects the insects that the frog eats which in turn affects the frog. It’s a classic example of how important a fully intact eco-system is to many animals. It’s also not possible to grow Brazil nuts outside of the rainforest. For years they didn’t know exactly why here either but they have now at least found the answer to this one. Eating Brazil nuts helps preserve the Amazon!
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