Adults are 60–70 mm (2.4–2.8 in) in length, and are distinguished from common toads by a yellow line down the middle of the back and parallel paratoid glands.

Natterjacks have a very loud and distinctive mating call amplified by the single vocal sac found under the chin of the male.

The natterjack toad spawns between the end of April and July, laying strings of eggs in shallow, warm pools.

Reasons for its threatened status[citation needed] include: In England, the toad's sand dune habitat is protected by a number of national nature reserves.

[5] To reverse habitat loss, the National Parks and Wildlife Service has created ponds for the species with some funding from the Heritage Council.