tigers are in U.S captivity than are left in the wild. In fact, as many as 10,000 tigers, lions and other endangered big cats are privately owned in the United States, according to the International Fund for Animal Welfare (IFAW).
In the case of big cats owned as pets, i.e. not exhibited to the public,
there is no federal regulation governing how they are kept. State laws vary from no restrictions, to simply requiring registration, to some states banning ownership as pets. But, the bans are often ineffective because the states that ban ownership as pets often do so by exempting those who hold USDA licenses as commercial exhibitors. According to a 2010 audit of USDA by OIG, 70% of private owners with four or less cats were actually pet owners simply using USDA registration to evade the state law. So, individuals buy cute cubs that grow up to be dangerous, unmanageable and expensive to feed. They end up in tiny, barren cages in back yards, abandoned to sanctuaries that are struggling financially to support the steady flow of unwanted cats, or in the illegal trade for their parts. Cats owned by exhibitors do fall under the regulations promulgated by USDA under the Animal Welfare Act (AWA), but they fare no better. The USDA sets minimum standards that allow these cats to spend their entire lives in small, concrete and chain link cages that in effect are prison cells. And even these minimal standards are totally impractical to enforce. USDA has about 100 inspectors to police over 2700 exotic animal exhibitors and thousands of other animal facilities. Horrible facilities are cited year after year and only a few of the very worst are ever shut down. As a result, the vast majority of big cats live in conditions that any compassionate person would view as cruel and inhumane.