Anup Shah / Masai Giraffe (Giraffa tippelskirchi) males necking, Masai Mara, Kenya, Sequence 3 of 3

Anup Shah / Two Reticulated giraffe, necks entwined {Giraffa camelopardalis reticulata}, Samburu NR, Kenya

Anup Shah / Giraffes necking {Giraffa camelopardalis} - play fighting. East Africa

Tony Heald / Two male Giraffe (Giraffa camelopardalis) sparring (also known as 'necking'). Namibia, Southern Africa

Tony Heald / Two male Giraffe (Giraffa camelopardalis) sparring (also known as 'necking'). Namibia, Southern Africa

Richard Du Toit / Northern Giraffe (Giraffa camelopardalis) males necking, Kgalagadi Transfrontier Park, South Africa

Denis-Huot / Masai giraffe (Giraffa cameleopardalis tippelskirchi), young males fighting, Masai-Mara game reserve, Kenya

Denis-Huot / Masai giraffe (Giraffa cameleopardalis tippelskirchi), young males fighting, Masai-Mara game reserve, Kenya

Ann & Steve Toon / Juvenile Giraffes (Giraffa camelopardalis) necking, Kgalagadi Transfrontier National Park, South Africa.

Jen Guyton / Reticulated giraffes (Giraffa camelopardalis reticulata) two males necking / fighting. Laikipia Plateau, Kenya.

Graeme Guy/ BIA / Reticulated Giraffe (Giraffa reticulata) sub-adult males fighting, Samburu-Isiolo Game Reserve, Kenya

Yva Momatiuk & John Eastcott / Angolan Giraffe (Giraffa giraffa angolensis) sub-adult males play-fighting, Etosha National Park, Namibia