A quiet suburban street in South Anchorage, Alaska, played host to a pitched battle between two big male moose last week, with the head butting and wrestling was caught on camera.

The action occurred on a lawn and in the street in Goldenview Park and was recorded by local Bill Tyra, who kept a vehicle between him and the sparring animals.

That was a good move, because male moose tend to be more aggressive and dangerous this time of year—during their annual rut cycle—says Kristine M. Rines, a moose biologist with the New Hampshire Fish and Game Department.

During the moose rut, which typically occurs from mid-September to mid-October, females become fertile. That causes testosterone to spike in the males.