Blue poison dart frog: the bright little frog whose poison comes from its dinner
The blue poison dart frog eats its poison rather than making it. Where it lives, why it is so blue, how quiet it is, and whether you can keep one.
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Glass frog: the see-through frog that hides its own blood to sleep
A glass frog has a see-through belly, and while it sleeps it tucks nearly all its blood into its liver. Here is how it works, and how to see one gently.
