By Tom Gillespie @TomGillespie1
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The confrontation broke-out on the edge of the aptly-named Lake Panic in Kruger National Park, South Africa.
Stunned amateur photographer Ken Haley snapped the incredible photos on June 11 of this year.
He said: “The female hippo and her calf were in the dam about a hundred metres away from the main hippo pod.
"The crocodile was lying still on the shore pretty much minding its own business when suddenly the hippo charged out of the water and attacked the crocodile.”
The UK-born 62-year-old, who now lives in South Africa, said he thought the hippo was making a pre-emptive strike to protect her young.
He added: “My first reaction was one of shock at the speed of the hippo and her level of aggression against the crocodile.
“My second reaction was 'wow, you don't see that every day!'
"There was a short stunned silence among everyone in the hide, before we realised what we had just seen, then the usual question: did you manage to get a photo?
“The hippo must have felt that her calf was under threat from the crocodile and her protective instincts kicked in.
“She appeared to snap her jaws around the crocodile's body as it tried to twist and thrash to break free.
“The hippo held its grip for a couple of seconds before the crocodile was able to escape into the safety of the dam. It disappeared into the water and I didn't see it again.”