Paris Hilton has been slammed by an animal rights group for her growing brood of dogs - accusing her of encouraging others to buy pets as accessories. Animal rights campaigners People for the Ethical Treatment of Animals (PETA) believe Hilton's recent acquisition of Jimi Hendrix (a Chihuahua) and Cinderella (a Yorkie) from a pet store in Beverly Hills are setting bad examples for young fans to follow. And now PETA president Ingrid Newkirk has penned an open letter to the star, writing, "Perhaps you (Paris) and other vacuous stars need to tattoo 'Don't buy while pound pups die' on your foreheads to remind each other of that home truth." Hilton's latest purchases brings her total number of pets to a reported 25.