Bertie Gregory / Vancouver Island Grey wolf (Canis lupus crassodon) alpha female swimming across estuary, Vancouver Island, British Columbia, Canada, August.
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Bertie Gregory / Vancouver Island Grey wolf (Canis lupus crassodon) alpha female yawning, Vancouver Island, British Columbia, Canada, August.
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Bertie Gregory / Vancouver Island Grey wolf (Canis lupus crassodon) alpha female yawning, Vancouver Island, British Columbia, Canada, August.
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Bertie Gregory / Vancouver Island Grey wolf (Canis lupus crassodon) alpha female, Vancouver Island, British Columbia, Canada.
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George Sanker / Grey Wolf (Canis lupus) Yellowstone National Park, Wyoming, USA, May.
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George Sanker / Grey Wolf (Canis lupus) with Elk carcass. Yellowstone National Park, Wyoming, USA, May.
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George Sanker / Grey Wolf (Canis lupus) with Elk carcass. Yellowstone National Park, Wyoming, USA, May.
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George Sanker / Grey Wolf (Canis lupus) feeding on elk carcass, Yellowstone National Park, Wyoming, USA, May.
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George Sanker / Grey Wolf (Canis lupus) with black colouration, Yellowstone National Park, Wyoming, USA, May.
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George Sanker / Grey Wolf (Canis lupus) approaching Elk carcass. Yellowstone National Park, Wyoming, USA, May.
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George Sanker / Grey Wolf (Canis lupus) portrait, Yellowstone National Park, Wyoming, USA, May.
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Edwin Giesbers / Two European grey wolves (Canis lupus), captive, Norway, February.
