A most interesting report on Cat overpopulation Canada 2012 by the Canadian Federation of Human Societies.
The research found that there are an estimated 10.2 million owned cats in Canada and the owned cat population is growing at a rate faster than the number of households across the country. Shelters are at or near capacity to care for the cats that arrive at their doors. This is exacerbated by the fact that twice as many cats as dogs are being brought in for care. Extrapolating the data provided, it is projected that more than 600,000 homeless cats in Canadian shelters did not find new homes in 2011. Unfortunately, more than 1/3 of the cats surrendered to shelters were surrendered due to issues of housing including rental agreements, landlord conflicts and moving, followed by the animal taking up too much time or responsibility.