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Key terms: accessed adder adults amphibians been observed berus bites cm coluber common european common names conservation diet dorsal european adder european viper females forma frontal golay et al great britain habitat hibernation jan keeled kg markings melanistic mg minton nomen nudum pelias pelias berus pelias occidentalis prester rarely reptiles reuss rows scales small scales snake specimens subspecies type locality var varies venom ventral scales vipera berus Search external links cited by footnotes on Wikipedia page Vipera berus: |
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