I’m completely freaking out right now.
The only clue I have about what this might be is in the glint of blue on the tail, which triggered a memory I have of a conversation I had with our neighbor last week in which we discussed the mosquitos around here and also in which she said that the mosquitos are actually much better now than they used to be as a result of the fact that our other neighbor now has a bat house in his backyard and that the skinks (which she described as little lizards with blue tails) have moved into the neighborhood and they also eat mosquitos.
I feel like Godzilla has moved into my house and is trying to take up residence in my child’s George-in-the-box.
ETA:Â I’ve done a little research, and I found this picture, but I don’t think it quite looks like the one in our basement:

Maybe ours is very, very old or very, very young…?