The Rohnert Park Animal Shelter, Petaluma Animal Services, Forgotten Felines, the Sonoma Humane Society and Sonoma County Animal Care and Control will be jointly participating in a week-long Worldwide Spay Day event from Feb. 24-29 by offering free cat spays and neuters to low-income residents of Sonoma County. Worldwide Spay Day is sponsored by the Humane Society of the United States to highlight the continual need to spay and neuter cats in order to decrease the cat overpopulation in this country.