Where Have All the Frogs and Toads Gone?
According to this article:

Frogs and toads are becoming extinct all over the world. It's the same magnitude event as the extinction of the dinosaurs.

What is the reason?

Toads and frogs are dying out under pressure from the expansion of agriculture, forestry, pollution, disease and climate change, NatureServe said.

In other words, they haven't got a clue.