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Female adder giving birth to live young
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Newborn adder in membrane
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Immature female adder
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Adder amongst heather
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Adder coiled up
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Adder
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Female adder draped over tree stump
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Female adder
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Adders
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Female adder with two males
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Male adder curled up on moss
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Hemipenis of male adder
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Adder with mouth agape
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Adder next to sloughed skin
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Adder eating a sand lizard
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Close up of adder's head showing tongue