The European common frog (Rana temporaria), also called the common frog, is the most common amphibian found in Finland. It can live in all kinds of habitats, as long as there is a suitable spawning pond, or even just a ditch or rocky puddle, somewhere nearby.
The common frog population closest to Helsinki city centre can be found on the island of Harakka. On the mainland, the closest frog spawning grounds to the city centre are the rocky ponds near Laakso Hospital.
The European common frog’s egg clusters typically contain over a thousand eggs. Spawning season is in mid-April. The tadpoles are herbivorous, developing into small frogs that emerge from the water on to dry land in July. The European common frog is a protected species.