The red-spotted newt has three distinct stages: larval, juvenile (“eft”), and adult. An aquatic larva has olive skin and feathery gills, and metamorphoses into an eft within two to five months. The land-dwelling eft develops toxic skin secretions and turns a bright orange to ward off predators. After two to three years, the eft returns to the water and matures into an adult. Dorsal coloration in an adult red-spotted newt can vary from yellowish-brown to greenish-brown based on age and sex. It develops the recognizable black-ringed red spots during this time. Adult size is 3-5 inches.