Spaying animals reduces the incidences of mammary cancer, eliminates uterine and ovarian cancer risk and prevents pyometra, a potentially life-threatening infection of the uterus.
Neutering male animals protects them from prostatic hypertrophy and infections, as well as testicular cancer and certain types of hernias.
Several less desirable animal behaviors are reduced by spaying and neutering as well - including roaming and territorial aggression.
2 uncontrolled breeding cats create the following:
2 litters a year at a survival rate of 2.8 kittens per litter.
With continued breeding:
Year 1 = 12 cats
Year 2 = 66 cats
Year 3 = 2,201 cats
Year 4 = 3,822 cats
Year 5 = 12,680 cats
Multiplying to a staggering
Year 10 = 80,399,780 cats