How many species of house cats are there in the world?

There is only one species of house cat: Felis catus.

While there are many different breeds of domestic cats, they all belong to the same species. The different breeds were created through selective breeding over many years.

What percentage of the us population are allergic to cats?
What Suppose that the allele for blue eyes in cats is recessive and your cat has statement can you make about genotype eye color?