Rainier Partners, a private equity firm, has invested in Pet Food Express, a pet retailer that sells healthy pet foods.

Rainier’s investment will support PFE in expanding its reach to help pets live healthier lives.

“For over 30 years, my business partner Mark Witriol and I grew Pet Food Express without outside investment, so when it came time to choose a partner, we were very selective,” said PFE’s CEO Michael Levy. “We wanted a partner that truly understood our mission and our work in the pet community. We were extremely fortunate to find a cultural match with the team at Rainier; we could not be more excited for what the company will accomplish with Rainier’s support.”