Tony Phelps / Boomslang (Dispholidus typus) Immature male hunting in thorn bush above deHoop Vlei, Western Cape, South Africa, December
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Nick Garbutt / Masai Giraffes (Giraffa camelopardalis) on open plains browsing Whistling Thorn Acacia (Acacia drepanolobium). Slopes of the Ngorongoro Highlands with the Serengeti Plains beyond, Tanzania. (Digitally...
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Tony Heald / Eland (Taurotragus oryx) males locking horns and fighting. Devil's Thorn flowers (Tribulus terrestris) cover the ground. Etosha National Park, Namibia, January.
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Tony Heald / Eland (Taurotragus oryx) male horning the ground which is covered in Devil's Thorn flowers (Tribulus terrestris). Etosha National Park, Namibia, January.
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Tony Heald / Spotted Hyaena (Crocuta crocuta) rolling in Devil's Thorn flowers (Tribulus terrestris). Etosha National Park, Namibia, January.
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Sharon Heald / Black-faced Impala (Aepyceros melamis petersi) male standing in a field of Devil's Thorn flowers (Tribulus terrestris). Etosha National Park, Namibia, January.
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Tony Heald / Zebra (Equus quagga) foal running through Devil's Thorn flowers (Tribulus terrestris). Etosha National Park, Namibia, January.
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Robert Thompson / Early thorn moth (Selenia dentaria) camouflaged as dead leaf on stem, Argory, County Armagh, Northern Ireland, UK, March
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Alan Watson / Baobab tree (Adansonia rubrostipa) and Sogno (Didierea madagascariensis) in spiny forest, Reniala Reserve, Madagascar
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Philippe Clement / Devil's thorn (Tribulus zeyheri) the Kalahari desert's prominent creeper, appearing after the rains, Kgalagadi NP, South Africa
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Gerry Ellis / Whistling Thorn (Acacia drepanolobium) tree over savannah, Masai Mara National Reserve, Kenya
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Mitsuaki Iwago / Masai Giraffe (Giraffa tippelskirchi) feeding on Whistling Thorn (Acacia drepanolobium) acacia tree, Serengeti National Park, Tanzania