Many types of birds such as woodpeckers nest in trees, squirrels LOVE oak trees (for their acorns) and there are tree lizards also.
Birds, squirrells, bugs...
grey squirrels, red squirrels, bule jays
They live with other black bears
I guess the right answer to the question would be, the fact that it depends on the region of the oak woods. The animals could vary from squirrels to wolfs.