It's not uncommon for people to come face to face with foxes. They're typically skittish and will run away.
But more and more are wandering straight up to people's homes. It's a sight that's putting many parents on edge.
"For me, I'm not so much worried about myself, but I think they'd be quite interested in a little munchkin like her (her child), so I'll keep an eye out here at the playground," says Arlington mother Meredith Clifford.
Pete Carroll is a father of two.
A fox lingered around his car the other day as he took his son to preschool.
"Any sort of wild animal like that definitely worries me whether they are carrying rabies or something like that," Carroll says.
Alice Burton is Arlington County's animal control chief and says wildlife will continue visiting our homes as we continue building on theirs.
"We're trying to learn how to coexist with one another," Burton says. "These animals really are not a danger, but there are certain precautions you do have to take."
Like vaccinating your pets. That's the law. And keep close eye on small children.
They may mistake wildlife for pets.
"And if you do see an animal that is just getting too close, too comfortable with people, then give us a call. Let us assess the situation," Burton says.
And people are seeing more foxes now that the weather is warming.
So many appeared in one part of Arlington, a neighborhood email alert went out.
The reaction is not exactly what you'd expect.
"Cherrydale Listserv had a sighting of a mangy fox and people were concerned about that - but it seems like people on the listserv actually like the foxes. It's just part of our life now," says Arlington mother Ellen Moy.