Country music star Walker Hayes has partnered with Canidae Heartland dog food to release a new song titled "Love Is a Four-Legged Word," celebrating his bond with his dogs. The Grammy-nominated singer performs the acoustic track using both his own voice and a puppy voice to represent his dogs' perspectives, with the song originally developed as a theme for an animated children's series called Walker's Woods before being adapted for the campaign.

Canidae Heartland positions itself as an ethical pet food brand emphasising farm-raised chicken, ancient grains, and regeneratively-farmed ingredients, with no corn, wheat, soy, or artificial additives. The product is manufactured in Brownwood, Texas, includes live probiotics for digestive health, and comes in three varieties priced at £20 for a 10.5-pound bag at Walmart. The brand donates 1% of sales to the American Red Cross and has achieved a 4.7-star rating from hundreds of customer reviews, with a dedicated puppy formula also available.