The name 'amphibian' means both kinds (amphi) of life (bios) - terrestrial and aquatic. In March, amphibians start their return to water, and then spend a few months in ponds, to mate and lay their eggs. Once they have mated, the adults move away; by late summer even the tiny young are no longer aquatic tadpoles and they, too, migrate to land.
Reptiles are not tied to water, though grass snakes like to hunt in it for fish and occasionally frogs. The fermenting warmth of compost bins and manure heaps are more attractive to reptiles, which use the heat to lay and incubate their eggs and young.
Here are some common amphibians and reptiles that you might spot in your own garden.