One Australian couple witnessed these fights of male kangaroos.

Jacob Van Der Meer, a 41-year-old gardener, and his partner Trish were walking down a road in New South Wales, Australia before lunch when they saw two of male kangaroos and howling.

Jacob said, “We never saw them do this and we thought something strange was going on.”

The couple believe that the fight occurred because they were both interested in a female kangaroo.

SOURCE: Caters Clips/vandermeer.jacob