Nomenclature
| Common name: | adder |  | ||
| Taxonomy: | Vipera berus berus (Linnaeus, 1758) | |||
| Other Names: | Northern viper Common viper Gad Gwiber (Welsh) |
| Common name: | adder | | ||
| Taxonomy: | Vipera berus berus (Linnaeus, 1758) | |||
| Other Names: | Northern viper Common viper Gad Gwiber (Welsh) |