The dice snake (Natrix tessellata) is a European nonvenomous snake belonging to the family Colubridae, subfamily Natricinae.
Females are bigger than males. Maximum size is 1.0-1.3 m (39-51 inches) long. The color may vary from greyish green to brownish or almost black, with dark spots on the back. The belly is sometimes vividly coloured in yellow or orange, with black spots, very similar to dice, hence the name.