2. Check the Skin and Haircoat
Turn your cat on its back and check areas that allow fleas to hide. The armpits and groin are two areas that are warm and protected; favored spots for fleas to hide out. Check your cat’s ears carefully for signs of scratching, redness, blood, or dirt. These can all be signs of fleas. The skin on the belly, groin, or base of the tail may appear red and bumpy, especially if your cat is doing a lot of scratching. Hair loss may occur in certain areas that are being scratched excessively, and there may be black spots on the skin along with scabbing.