“After that we put up the extra lock on the door because otherwise, Fenrir can open it.”While having a cat tall enough to open doors is an unusual problem, Fenrir holds the Guinness World Records title of “world’s tallest living domestic cat.”The 35-pound F2 Savannah cat — a breed recognized by The International Cat Association — is a cross between a domestic cat and an African serval.Because Powers made sure many people held him as a kitten and frequently touched his paws, Fenrir developed into a friendly cat who loves meeting new friends.The patient calmly responded, “OK, that sounds good.”“I’ve had people break down and sob and feel like their life is over, but when Fenrir’s there, it’s just a distraction from that situation for a moment,” Powers said.All six of his cats eat a blend of raw chicken, slow-cooked meats (for easy digestion), ground-up pig bones, krill oil, feline multivitamins and other supplements.“But I don’t care.”He can be a tad rankled by hate mail he gets on social media from people imploring him to “Adopt — don’t shop.” In addition to adopting rescue cats in the past, Powers is the former president of Ferndale Cat Shelter in metro Detroit and volunteers in his spare time doing trap-neuter-return missions in the rural area around his home in Farmington Hills, Michigan."