Fortunately, others also questioned the validity of this projection. The Feral Cat Project recently documented studies done by wildlife biologist Dr. Michael Stoskopf, and sent his findings to the University of Washington Math Department for analysis.
The results? A much more believable projection of 100 to 400 cats at the end of seven years. The difference, you see, is:
- The original figure was based on one cat delivering 12 kittens a year, with a 20% mortality rate. Dr. Stoskopf ’s studies found six kittens a year, with a 75% mortality rate.
- The original projection assumed 100% survival of all the cats grown to adulthood for the entire seven years, a percentage that should have triggered red flags from the very beginning.
Although it doesn't give the instant shock value of the higher number, 100 more unwanted cats per whole female stray still forms the basis of a compelling argument for the spay and neuter of cats.