On an evening game drive in the Eastern Cape region of South Africa, a safari tour guide was hoping to locate a pride of lions when instead he stumbled upon an unlikely scene, a rare encounter between two species of rhinos.

The black rhino, the smaller of the two in the above video, weighs up to 3,100 pounds and is critically endangered. The white rhino, weighing up to 5,100 pounds, has near-threatened status.

"I happened to see the two rhinos in the same area off in the distance with binoculars," senior field guide Wayne Howarth told Barcroft. "So I told my guests we must get there as soon as possible because it may be a rather interesting sighting, and something we don't often get to witness."

Howarth drove the tourists closer and captured video of the rare encounter, making sure to have a safe escape route in case they came too close.

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"It was an amazing thing to experience," Howarth told Barcroft. "I was very excited and my adrenaline was pumping. To see the size, power and speed of the massive beasts was hectic. It was a real intense few minutes."

The rare encounter, believed to be a territorial dispute, was unusual because the diets vary so much between the species.

"Both species are found in sub-Saharan Africa and look similar to one another, but the major difference is the shape of their mouths," Barcroft wrote. "Black rhinos have a pointed lip which they use to pick fruit from branches and select leaves from twigs, while white rhinos have a flat, wide lip to graze on grasses."

So they typically stay out of each other's way, Howarth said.

"It's not often we get to see them together," Howarth added. "It is no doubt in my top five wildlife experiences!"

Though it isn't shown on the video, the white rhino ended up winning the fight after which they went their separate ways.

h/t Daily Star