Give two identifying features of an adult male frog.
The two identifying features of an adult male frogs are:
i) Presence of vocal sacs: The male frogs have saggy skinned vocal sacs in their necks which amplify their sounds for attracting female frogs for mating.
ii) Presence of Copulation pad: The male frogs have a copulatory pad on the forelimbs which helps in holding the female tightly during mating.