Companion Animal Overpopulation

It is a sad fact of life in our society that millions of “surplus” cats, dogs and other domesticated animals have no place to call home. The kennels and cages of America’s animal shelters are filled to capacity with these abandoned, lost and unwanted creatures. New strays and discarded family companions arrive continuously, yet there is not nearly enough space for them all so their stay must be short as they await an uncertain fate.

http://www.idausa.org/facts/overpopulation.html