Between 50-100 Individual Bears Reside Within Ohio’s Borders. Black bears are omnivorous animals that feed on various food sources such as berries, bark, insects, and fish. Dens are typically located in hollow tree trunks, rock crevices, or old stumps near ground squirrel burrows – making this species quite adaptable in terms of habitat selection: from lakes near wetlands through grasslands, forests to suburban neighborhoods, they have no preference about where they make their homes.