My friend gave me her dog 2 days ago. As far as I am aware he did not have any fleas at the time ( she has 2 other dogs and they don’t have fleas, and all of the dogs never have.) Yesterday I took him to the groomers and they didn’t say anything about fleas, which I would assume they would have. Anyways today my 6 month old son has 2 groups of 3 little red bumps, one group on his arm, and one on his leg. I didn’t even think about fleas until my father watched him and said that he had a couple little bites and they kinda looked like flea bites. So now the real question is does anyone know how fast fleas can come into the home, to bite humans. My fiance and I have both checked the dog and found nothing, but I’m wondering if this even sounds like fleas or what? Thanks for everyones imput!!!!