Historically, many pet stores sold dogs sourced from commercial breeders, a practice that often raised ethical concerns regarding "puppy mills". To promote animal welfare, Petco transitioned its model to strictly supportive adoption services.

Chain with pet food & supplies such as toys, beds & pet technology products, plus medication. Become an Adoption Partner - Petco Love

: Prospective owners must usually fill out an adoption application and may undergo a vetting process, which can include home visits or interviews.