Adder Vipera berus

The adder is one of our three native snake species, most often found on heaths, moors and coastal areas. However, its secretive nature and camouflaged markings mean it often goes unnoticed. The adder is the UK’s only venomous snake. Image: Matt Berry/Greenwings Wildlife Holidays (Flickr).

Find out more: Amphibian and Reptile Conservation, Suffolk Wildlife Trust, iNaturalist