The RSPCA explains how to tell the difference between the three snakes native to the UK - the adder, grass snake and smooth snake.

In comparison, grass snakes are usually an "olive green colour, with large eyes ... which are soft and leathery. The smooth snake is the least widespread across the UK, according to the RSPCA ...

The RSPCA explains how to tell the difference between the three snakes native to the UK - the adder, grass snake and smooth ...