I live in Maryland, in a fairly densely populated suburb of Washington DC.
Mammals - Very commonly see squirrels and rabbits. Fairly often see white-tail deer. Occasionally see red fox, raccoons, and groundhogs. Once in a great while see opposums.
Birds - Very commonly see American and fish crows, robins, house sparrows, cardinals, pigeons. Fairly often see starlings, red-winged blackbirds, song sparrows, various hawks, gulls (there is one Metro parking lot that always has gulls for some reason). Occasionally see great blue herons (cool birds), green herons, ospreys, various swifts, turkey vultures.
Reptiles: Nothing commonly seen. Once in a while skinks and small snakes.
Amphibians; Hear frogs in the pond at the back of the development in the spring
Invertebrates: Commonly see various bumblebees - Eastern, Carpenter. Brown-belted. Also Cabbage white butterflies, monarchs, swallowtails, spotted lanternflies, and the blue dasher dragonfly. Fireflies in June and July.