yes

My chihuahua mix eats the bark off a fallen staghorn sumac at least once a day, and has shown no ill effects. The flowers of the tree are edible (for people) and contain lots of vitamin C.

Dry staghorn sumac burns well when dry, but sumac wood is not very dense and does not have as the btu content per pound or per stick that hardwoods or even softwoods do. Staghorn sumac flowers are sometimes used by apiarists to "smoke" beehives, which helps to eliminate mites and other parasites from the bees. It is important not to burn poison sumac because the skin irritants can become airborne and enter the lungs, causing severe problems.

Most sumac species that I am familiar with (Staghorn sumac, winged sumac and smooth sumac) are all pioneer species that will grow almost anywhere. I have seen them growing in wetlands and uplands, though not in the very wettest areas.

They live only about ten to twenty years, and by that time, other species tend take over.

A staghorn fern is a fern.