and the dark hard patches of skin on their toes used for digging. They spend much of their time underground and are most active on the surface at night following heavy spring and summer rains. The ...

But frogs may yet hold clues to killing pain. At least one frog does deploy an opioid: the waxy monkey tree frog (Phyllomedusa sauvagii), whose skin is laced with the peptide dermorphin. Although the ...

But you would need to look hard to spot the UK’s largest newt ... Frogs are amphibians that live in freshwater ponds and lakes. Frogs have smooth skin, no tail, and strong, webbed feet that ...

and Greening's frog (Corythomantis greeningi). Both are found in Brazil and produce skin secretions like other poisonous frogs - but these species have spiny bone protrusions that make their poison ...