By Tom Gillespie @TomGillespie1
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The powerful animals went head-to-head as a young foal stood nearby, with the one of the males making a charge towards the youngster.
Wildlife photographer Don Charles captured the intense brawl, but is unsure why the animals started fighting in the first place.
He said: “I think it was just that time of the year when the testosterone is flowing.
“It was obvious they were vying for dominance, but it was not clear if the foal belonged to one of them.
“Male zebras have been known to kill a foal to get closer to a female.”
Don captured the images of the plains zebras in uMkhuze Game Reserve in KwaZulu-Natal, South Africa, in July.
He continued: “I was there a long time, leaving and coming back, and they were just fighting the whole time around this watering hole.
“The level of aggression was unbelievable.
“We just left them to it after a while, so who knows how long they were fighting for.”
Don, 72, was born in Liverpool but emigrated to Ballito in South Africa in 1983.