Guillermo Esteves's Image

The worried looking expression on this dog’s face speaks volumes and is a reminder that moose are large, unpredictable, wild animals.

Guillermo was photographing moose on the side of the road at Antelope Flats in Grand Teton National Park, Wyoming, USA, when this large bull took an interest in the furry visitor – the driver of the car unable to move it before the moose made its approach. Luckily, the moose lost interest and went on its way after a few moments.