Signs your dog has an ear infection
Look and Smell
Head shaking, scratching at ears, redness, and a yeasty or foul smell are classic signs. Do not put water in the ear.
Causes
Yeast, bacteria, allergies, or moisture (swimmer's ear).
Treatment
Vet-prescribed drops are usually needed. Home remedies like vinegar can sting or make it worse if the eardrum is ruptured.