When you buy through links on our articles, Future and its syndication partners may earn a commission. Credit: Getty Images Can cat fleas live on humans? If you have a feline friend in your family ...

Q: Mackenzie, my 2-year-old male cat, scratches, licks himself obsessively and bites his skin even though he's on Advantage flea treatments every month and has no fleas. He's starting to develop some ...