Hi Jon. There are number of things that could be causing Waffles red eyes - Cavs are prone to a number of eye conditions. It could be something simple like Waffles has irritated her eyes by rubbing her head against the carpet, could be allergies, dry eye, or Etropion (lower eyelids edges roll inward towards the eye causing eyelashes to rub the eyes and causing irritation). This condition can be corrected with surgery. It's definitely worth asking the vet about. Good luck!
Teri....mom to Bella, Sofi, Riley (kitty), Cooper (kitty), and Kitsy (kitty)