The dog has 'fleas'.
a 'flea' bite
(..) Yeah, uh... me, too. Is that my dress? Okay, so, in this example, we're the acrobat. Will and Barbara, and that monster, they're this flea. And this is the Upside Down, where Will is hiding. Mr. Clarke said the only way to get there is through a rip of time and space. - A gate. (..)2016 TvShow: Stranger Things Title: Chapter Seven: The Bathtub Season: 1 Episode 7