"Free spaying" refers to a medical procedure for female animals (like cats or dogs) that prevents them from having babies. It means that the procedure will be done without any cost or payment required. Full definition
By offering free spay / neuter services to underserved areas of this city, we're able to target neighborhoods where we'll have a definite impact. (snipsa.org)
Can a veterinarian satisfy a portion of his or her continuing education requirement by providing free spaying and / or neutering services? (op.nysed.gov)
The waiting time for getting feral and free - roaming cats in for FREE spay and neuter is also shorter this time of year. (green-hill.org)