Captive tigers in the U.S. outnumber those in the wild. It's a problem.

Some are in roadside zoos. Some are pets. Many are abused. A lack of regulation on big cats is putting animals and humans at risk.

Clay, Daniel, and Enzo, three of 39 tigers rescued from an animal park in Oklahoma, gather at a pool at the Wild Animal Sanctuary in Keenesburg, Colorado. These cats will live out their lives here, with proper nutrition and vet care.

We heard them before we saw them.

Their squawks echoed from inside the neat, ranch-style home, sounding more like parrots than tiger cubs. Then James Garretson carried Hulk into the living room, where the McCabe family waited on the couch. The kids giggled as he placed the squirming cub on nine-year-old Ariel’s lap and pushed a baby bottle into its mouth. “Hold the bottle, just like that. You got it?” She nodded.

Everyone beamed, fondling Hulk’s rough, striped fur as Garretson hovered nearby. The 12-week-old, cocker spaniel-size cat clutched the bottle in his oversize paws, sucking with wild enthusiasm. When the bottle was empty, the cub wandered onto the coffee table and swatted our photo gear.

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