A reader has recently been finding a lot of skinny worms on her patio. Normally they are dead, perhaps because of a lack of moisture (so speculates the reader), and the worms are primarily red, but their underside is beige. (In the pictures the reader sent, the worms look fairly brown too, but they are definitely of a reddish hue.) The reader doesn’t seem to mind their company, but she has a cat that spends a lot of time on the patio, so she wanted to make sure the worm isn’t parasitic. What is the skinny worm on the patio, and is it harmful to our reader’s cat?