I have a 17 wk- old lab puppy, and took her to the vet today for another round of shots, and while I was there I pointed out to the vet that one of her ears had a bunch of black stuff in it. She swabbed it, and after looking at it under the microscope, she confirmed it to be a yeast infection. My biggest concern is that she said the puppy having this condition at such an early age was a sign that the pup will likely have ear problems throughout her life. I have two questions: 1) what type of ear problems should I be concerned about?; and 2) is there a home-made solution that works to clean out the dog's ears after swimming?