Comb through their fur with your fingers or a comb, paying special attention to warm, protected, tender spots like ears ... flea bites. 3. Hair Loss – Alopecia may be experienced in some dogs ...

In all my years of practice, I’m amazed at how hard it is still today to find fleas. A flea is an external parasite of dogs and cats ... You will not see the flea bites, but you will see ...

Your dog may have fleas if they scratch a lot, have small red bites, or have "flea dirt" on the skin. Your best bet is to take a flea comb to the base of your dog's tail and see if you can spot them.