Justin Bieber Has Been Warned By Authorities to Stay Away from Exotic Cat Selfies

Justin Bieber just learned the hard way, you can't pose with big cats in the city of Toronto ... and if he does it again, there's gonna be some problems.  

In a letter -- obtained by TMZ -- the Toronto Animal Service informed Bieber they'd received complaints of him posing with a white lion cub backstage at a show in May and with a tiger at his dad's engagement party in April.

The TAS let Bieber know it's illegal to have any type of exotic cat within city limits ... and issued a stern warning for any future visits.

GRAPHIC IMAGES: Zoo’s Abandoned Animals Turn To Mummified Stone Statues

THESE are the rare and exotic zoo animals left to become bizarre mummified corpses at a neglected zoo.

Dozens of animals, including tigers, monkeys and crocs, have been left to rot by keepers into stone-like statues.

The Khan Younis – becoming notorious as by far the globe's worst zoo – was abandoned when the Gaza-Israel conflict intensified in the Middle East in 2014.

Mohammed Awaida opened the South Forest Park complex in 2007 and apparently invested hundreds of thousands of dollars.