Dennis Hof -- the owner of the famous Bunny Ranch where Lamar Odom overdosed -- has passed away at the age of 72.
Law enforcement sources tell us they got a 911 call from Hof's Love Ranch in Crystal, Nevada around 11 AM. We're told the call was for an unresponsive male. Detectives are currently on scene ... no foul play is suspected.
Hof shot to superstardom as the star of the HBO series 'Cathouse' -- which followed him as he ran his famous brothels in Nevada.
Hof bragged about being a pimp -- and came up with his own catchphrase, "There's no business like ho business.