Signs of River Otters & Other Elusive Animals Friday March 14, 2025, 1:00pm (2.5 hrs), Register through NMC Extended Education River otters are active and healthy at Grass River Natural Area. Join a naturalist to learn the natural history of river otters and how to spot signs of these elusive and fun indicators of water quality. On the trail we will look for signs of other elusive animals, like bobcat, mink, or black bear (dress to be outdoors). Register