Flea dirt is digested blood (or essentially flea poop) and looks like small black specks within the fur, and if dampened with wet cotton wool it looks dark red. Finally, if your cat has fleas you ...
Signs of fleas in cats include scratching, skin irritation, and the presence of dark red or black specks on your cat's skin, fur, bedding, or furniture. These specks, about the size of grains of ...