Adder (Vipera berus) coiled, basking on moss in the spring sunshine, Staffordshire, England, UK, April. Photographer quote: "OK so snakes are perhaps not as sexy as seals or foxes but I just can't get enough of them - I'm a bit of a reptile crusader! People say they are dangerous but I tell you what, I'd rather take my chances walking in adder country than in most modern city centres on a Saturday night!" Did you know? Britain's adders are in decline in parallel with reptile populations generally.