Whilst on a drive in Lake Nakuru National park, I saw two male dik diks fighting. These tiny antelopes were really going at it and were completely oblivious to the car that was parked about 4 metres from them. I watched them for a good 15 minutes.
Nikon D700, Sigma 150-500mm at 500mm, F 6.3, 1/320s, ISO 1600, handheld.
Lake Nakuru National Park, Kenya