Grass Snake (Natrix natrix)
The Grass Snake is Britain’s largest native terrestrial reptile and probably it’s most common species of snake. It can grow to over a metre long and is strongly associated with water habitats, such as ponds and ditches. It is completely harmless to people and almost never bites, even when caught. As with all native reptiles, it is illegal to harm or kill them.
The Grass Snake is most easily identified by its interlinked black and yellow collar which usually forms a band or ring immediately behind the snake’s head. The upper body is normally olive green or olive brown with black vertical bars along the flanks. On the underside, the belly scales are buff, cream or white and have an equally individual chequered pattern in black.