Look for signs of a flea infestation on your dog, including nonstop biting, scratching, or licking and red, irritated skin. Flea dirt, a rust-colored mixture of blood meal and dried feces ...
When a flea infests your dog, it will jump on them ... So you’ll see flea dirt, which is the product of a flea ingesting your pet’s blood and then passing it as feces. And in addition to ...