Shedding is normal, but sudden or excessive shedding beyond your dog’s usual pattern can signal something a shampoo won’t fix — hypothyroidism, allergies, parasites, or a nutritional deficiency. A few signs are worth watching for: bald or patchy spots rather than general thinning, red or scaly skin, unusual odor, or shedding paired with weight loss … Continue reading Best Deshedding Shampoo for Dogs 2026 — Rule This Out First