Dog Supplements Market Report: Sales Volume, Market Share, Leading Brands & Market Trends

Pro Plan Veterinary Diets is the best-performing dog supplements brand in July 2026, moving 100,000 units across 1 ASIN for 28.6% of Top 10 volume. Nutramax Laboratories follows with 70,000 units (20.0%), ahead of Greenies on 60,000 units (17.1%).

With 7 brands splitting the Top 10 and 65.7% of volume sitting with three of them, this is a concentrated shelf — the leaders hold multiple listings or one very high-velocity ASIN, so a new entrant competes against established review moats rather than an open field. Average selling prices among the leaders run from $17.08 to $33.59, which frames the price band a competing listing has to justify.

Based on July 2026 data, this shortlist surfaces the two kinds of ASIN worth keeping an eye on — the ones that just broke into the Top 10, and the ones growing fastest month over month. On the growth side, B01IUYFBPQ leads positive momentum with ▲ 25.0% MoM growth on 10K units, with B08QSK1CYF close behind at ▲ 12.5% MoM on 9K units.

The two signals carry different weight. A fresh entrant means share has already changed hands — an incumbent gave up its place to make room, so any competitive set drawn up a month ago is now out of date. A steep growth rate works as the earlier warning: it marks demand that is still compounding, usually a month or two before the ranking catches up to it.