The Problem: How do Feral cats Survive?

The life of a feral cat is often a sad struggle. These cats have no humans to feed them, provide them with shelter, and a loving home that would protect them from the elements. Female feral cats are often under much stress considering they are capable of getting pregnant so young and with so many. Male feral cats generally try to protect what territory they have. This often results in fights among the cats, and unfortunately injuries that are prone to disease. Surely life would be better if feral cats could not reproduce. The existing cats would be under less stress, and it would stunt the population growth; hopefully to the point where the only cats are those with loving homes. There is a method being used to reach for such a goal.