A paralegal by day, Susan Mariano devotes her evenings and weekends to cats. For 15 years, she has volunteered at the Neponset Valley Humane Society, an all-volunteer nonprofit in Norwood that rescues stray cats in surrounding towns as well as in Boston.
It’s a big job. “One unneutered male and one unneutered female can have a colony of 25 to 30 cats within a few months,” says Mariano, who lives in Stoughton. “The average litter is four, five or six kittens, and they are born every nine weeks. A cat can get pregnant again while nursing.”