The Panamanian frogs, it turns out, had been attacked by a protozoan that may also be killing frogs elsewhere.

Could the same disease be killing frogs and toads in Central America and Australia?

The real mystery is what might be killing frogs in pristine environments.

Departing from several of her colleagues who are looking to prove that a specific environmental factor kills frogs outright, Carey says she believes the problem is more complex.

What if she does find that what's killing frogs is some mix of global environmental changes?

Larger species can kill and consume frogs and lizards as well, but generally these do not form an important part of the diet of this family.

With venom from modified salivary glands in the lower jaw, they can kill lizards, frogs, small birds, or even rodents.

They have toxic glands in their skin that can kill other frogs.

Mantises have been known to kill tiny frogs as well as lizards.

They pay to kill frogs.