Size at hatching, 12 -17 mm; at metamorphosis, 49 - 60 mm total length

The Spotted Salamander is present only in the northeastern part of our range (where it is sympatric with up to two other mole salamanders). Females deposit eggs in a firm oval mass (60–100 mm in diameter) attached to vegetation near the surface of the water. The eggs (1–250 per mass) are black, but the egg mass may be clear or milky, with a greenish hue because of symbiotic algae. The larvae have a light chin and throat with a dull dorsum and tail fin lacking blotches. Spotted Salamanders gain their spots shortly after metamorphosis.