09/12/2008 at 04:30 PM EDT
Jenna Fischer's character on The Office
isn't a crazy cat lady – that role goes to costar Angela Kinsey – but in real life Fischer has a soft spot for her furry friends.
As a volunteer for the non-profit Kitten Rescue
in L.A., the actress has fostered nine cats, including Honey Bear, a 25-lb. feline, who had "hiding issues."
She also dotes on her frail black-and-white cat Andy, who she rescued from a friend's apartment complex when she was a college student 16 years ago.
"In the show Angela has all these elaborate procedures for her cat," says Fischer, who will host Fur Ball at the Skirball, a fundraiser for Kitten Rescue, on Sunday at L.A's Skirball Cultural Center. "I've done all that – the eye drops and ear swabs. I've checked their poop and massaged their tummy."
She even manned a kitty crisis line for a year. "That was like being a social worker for cats. You feel totally responsible when someone calls about an abandoned kitten," she says.
But Fischer, 34, keeps the cat love from getting out of hand as best she can – she says she's just "a little" cat crazy – though her house does have a portrait of Andy and is decorated with black-and-white cat figurines that Fischer got as gifts.
"He deserves to be the king of house," she says. "I want to dote on him."
And she looks forward to mingling Saturday with other feline enthusiasts. "When you're an animal lover you always have something in common with other animal lovers," says Fischer. "I can't wait to hear all the crazy rescue stories."