With eight rescue dogs of her own, it’s no secret Miranda Lambert has a soft spot in her heart for fury, four-legged friends.

That’s why in 2009, Miranda and her mom, Bev, started the MuttNation Foundation, an organization with the mission of ending animal suffering and homelessness on every front. The foundation has successfully raised millions of dollars to aid organizations, government institutions and entities that build animal shelters for better care and increased pet adoption.

Miranda’s latest venture to nurture her love of music and mutts involved collecting dog food, treats, supplies and cash at the entrance of each venue on her recent 24-city Livin’ Like Hippies Tour. Concertgoers dropped off their donations—which will support local dog shelters in each area—at the “Fill the Little Red Wagon” activation located at the entrance of each venue before the shows.

“My fans are passionate—they care about music and they care about animals,” says Miranda. “Without them, neither my music nor MuttNation could reach as many people or help as many dogs as we do. It’s incredibly heartwarming to see The Little Red Wagon overflowing at each show and it makes me crazy happy to combine two of my biggest loves, music and mutts, every night.”

Look for the The Little Red Wagon to roll back out this summer when it jumps on the Bandwagon Tour, featuring Miranda and Little Big Town.