The Environment Envir. No, it's not the Easter Bunny sneaking around out there. What you have is probably a gopher. Moles leave mounds too, but we'll go over those later.
Gophers are rodents with tiny tails, ears, and eyes.
They are generally pudgy and cute. Once in awhile, they'll come out of the ground and walk around just daring you to come get them. They can be quite formidable as an opponent. They leave mounds of dirt atop your lawn and it seems they plug the hole when they leave. Last year, I'd awaken and go outside in my tiny garden.