Aug, 11,2017, during our visit to Denali National Park with my Professional Photographers Pass, we came across a mother Grizzly and her two yearling cubs. The two cubs were playing along side the road not 30 yards from our car. The larger one climbed up an a boulder and the smaller one came over and wanted to join him. Reminded me of a game we played when I was a boy called King On the Mountain.
Luckily, I was prepared with my Sigma 150-600 Contemporary Zoom lens on my Canon 5D3. I shot about 20 shots of their interaction. In this one he seems to be saying "My Rock". Shot at f-6.3, 1/640 sec. ISO 1000 @ 600mm. Cloudy filter applied to compensate for overcast sky.