This keep on continuing only due to authorities' being blind. Or they prefer to stay blind because most the 'pet' owners are very powerful and rich locals.
One additional comment I have is about the above pic. its a cheetah, which is known to be very human friendly, unlike other members of the big cat family. Once I watched a documentary in discovery in which they said that there are no reports until now about cheetah attacks on human. I thought of sharing this since in many past news reports in Qatar about leopards, photos would be of a cheetah. even though it is immaterial here, just thought to point out. :-)