Description
The European spadefoot toads are small to large sized frogs, up to 10 centimetres (3.9 in) in length, which are often inconspicuously coloured. They are predominantly fossorial (burrowing) frogs, which burrow in sandy soils. They have a hardened protrusion on their feet to aid in digging, which is the source of the common name. They will emerge from the ground during periods of rain and breed in pools, which are usually temporary.
All of the species from this family have free-living, aquatic tadpoles. The eggs are laid in temporary ponds that may quickly evaporate, so tadpole stage is unusually brief, with rapid development to the adult form in as little as two weeks. To further speed their growth, some of the tadpoles are cannibalistic, eating their brood-mates to increase their supply of protein.
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