Caption: Male Lion (Panthera leo) following female, practically tripping on her feet as he follows her with intentions of mounting her, Mashatu Game Reserve, Tuli Block, Botswana. © Scotch Macaskill

Camera: Canon EOS 400D (Digital Rebel XTi); Lens: Canon 70-300 F4-5.6 IS USM; Focal Length: 110mm; Shutter speed: 1/1250; Aperture: f5.6; ISO: 400.