Certified humane dog food brands include Open Farm, which uses ethically sourced meat and sustainable farming practices, and The Honest Kitchen, which sources ingredients from small-scale farms and uses free-range, cage-free, and wild-caught proteins. Another, plastic free dog food option is Halo, which uses humanely raised meat and is committed to sustainability and reducing waste. It is important to note that certification can vary by country and region, so it is recommended to research specific brands and their certifications.