We took a tour into the Bute Inlet in Canada, BC. Spotted these little Grizzly cubs at Orford River. There were much more Grizzly bears around.
I used a 5D MKIII with the Canon 100-400 mm. The mother was with them and pretty close but the cubs were behind her. In this case we've had a guide with us but if we are hiking in the woods, where bears have their home we usually take a bell and pepper spray with us.
5D Mark III, 6D, EF 100-400mm L, EF 100-400mm L MKII, EF 70-200mm f/2.8 II, EF 24-70mm L f/4, Canon E 24-105 F/4, Canon EF 17-40, Canon EF 16-35 F/4, Canon EF 100 F/2.8, Canon 430EX II, Canon TC 1.4x III