In June 2026, we analyzed 1,140 ChatGPT recommendations across five pet care categories to compile the EMARKETER AI Visibility Index. This index tracks how often brands are mentioned and how they rank against competitors. This is the first edition for pet care, establishing the baseline against which future shifts will be measured.

Purina was the only brand mentioned in more than half of ChatGPT’s pet care recommendations. It ranked No. 1 overall with a 51% mention rate, 16 points ahead of second-place Hill’s Pet Nutrition at 35%. That was the largest gap between consecutive ranks in the top 10: Royal Canin followed at 30%, with the remaining seven brands spread between 25% and 10%.

Purina’s overall lead was driven by its performance in pet food. It was the only brand to place first in more than one category, appearing in 91% of cat food recommendations—the highest rate in the index—and 80% of dog food recommendations. It also ranked No. 2 in dog treats and chews with a 34% mention rate.

No brand led treats the way Purina and Dr. Elsey’s led food and litter. Greenies had the highest mention rate in dog treats and chews at 40%, and PureBites ranked No. 1 in cat treats at 52%—the two lowest category-leading rates in the index.

Blue Buffalo appeared in more category top fives than any other brand but led none of them. It placed in four of the five categories, yet never ranked higher than No. 4. This breadth carried it to No. 4 overall with a 25% mention rate.

About EMARKETER’s AI Visibility Index

Our AI Visibility Index is based on a structured analysis of ChatGPT recommendations. Upcoming reports and articles will also include Google Gemini. Each query uses standardized prompts (e.g., “most popular dog treats” or “dog food for sensitive stomachs”) spanning product type, attributes, consumer needs, target audience, and price tier. Prompts are built with EMARKETER analysts and researchers and are validated with search volume, so every brand is measured against the same benchmark.

Want a closer look at the AI Visibility Index? EMARKETER PRO subscribers can access in-depth reports featuring further category breakouts, data cuts, and analysis, while PRO+ subscribers can access the complete data set, including monthly updates across every category cut, in the live dashboard.

To learn more about how EMARKETER’s AI Visibility Index can help your brand, including advisory insights that pinpoint what’s shaping your visibility, visit our AI Visibility Index hub.