On Thursday, the police got an anonymous tip saying a wild animal was somewhere in the city. On Friday, another call directed them to the exact address. On Friday night, the police found no one home, but talked to a neighbor who complained of large amounts of urine and a strong smell coming through the ceiling, Mr. Kelly said. The neighbor said her daughter had seen the tiger.

Yesterday, the tiger's existence was confirmed. after a hole was cut in the apartment door.

Mr. Yates checked out of Harlem Hospital early yesterday, prompting an inquiry into his whereabouts. But investigators said last night he had been located in Philadelphia, where he was being treated at the University of Pennsylvania Medical Center. How Mr. Yates got to Philadelphia and the nature of his injuries were unclear. The police said he faced charges of reckless endangerment.

The caiman also was taken to the Center for Animal Care and Control shelter, the police said.

''This is an only-in-New-York story,'' Mr. Kelly said.

Getting to the tiger, a male, was no simple task. From an apartment on the fourth floor, the police first eased a pole-mounted camera out the window to keep track of him. Meanwhile, on the seventh floor, they prepared a team to rappel down so they would have a clearer view when firing tranquilizer darts to subdue him.

The police also called in animal experts, including Dr. Robert A. Cook, head veterinarian at the Bronx Zoo. Dr. Cook, visibly angry over the cramped conditions in which the tiger prowled, said keeping the creature in such a setting was ''crazy.''