He said that after a daylong staring contest with the cat he "had no doubt that he was my brother."
Cage is no stranger to drugs.
He's admitted to using drugs in his younger days. When promoting "Bad Lieutenant" in Australia, Cage told reporters that doctors there "still use cocaine to clear your sinuses."
According to OK! Magazine, Cage said he felt "invincible" and kept coming up with ideas after receiving the "cocaine solution" in his nose.
Cage has been married three times. An early relationship with model Christina Fulton, produced a son -- Weston Coppola Cage.
His first marriage to actress Patricia Arquette ended in 2000 and lasted five years, but divorce papers revealed the pair had only cohabited for the first nine months of their marriage.
Cage's second marriage to Lisa Marie Pressley only lasted four months.
His third marriage was to Alice Kim, who he met in 2004 when she waited on his table at a Los Angeles restaurant. The two have one child together-- a son named Kale-El which was Superman's name as a child.
Which leads us to Cage, the comic book geek.
Cage made news in April when a missing mint copy of Action Comics No. 1 -- the comic book debut of Superman -- belonging to him surfaced in a San Fernando Valley storage locker.
The comic, which has been authenticated, was stolen from Cage more than a decade ago, according to Detective Don Hrycyk with the Los Angeles Police Department's Art Theft Detail.
Cage accepted an insurance payout after the theft, so it is unclear if he will regain his missing comic.
Most people don't know that Cage is a huge fan of comic books. In fact, he has a tattoo of Ghost Rider on his arm and he developed a six-issue illustrated series called "Voodoo Child" with his son Weston. Set in New Orleans post Hurricane Katrina, the story focuses on a child who puts a voodoo curse on his soul before he is murdered by secessionist soldier.
Cage was recently featured in Charlie Sheen's "My Violent Torpedo of Truth/Defeat is Not an Option" tour.
According to Sheen, Cage once helped him smuggle cocaine onto a plane and came up with the term "goddess." During his show in Columbus, Ohio, Sheen said: "We're at this after-party and Nic Cage is over at the corner and he's showing a girl his watch," Sheen explained. "It was dark, but I knew exactly what he was doing. He has his wrist down here ... So she just kind of pokes him in the chest and walks away. And his response was 'Well there goes a goddess, an absolute f***ing goddess.'"
Cage hasn't commented on the performance.