BANGKOK (AP) — The multibillion-dollar trade in illegal wildlife — clandestine trafficking that has driven iconic creatures like the tiger to near-extinction — is also threatening the survival of great apes, a new U.N. report says.

Endangered chimpanzees, orangutans, gorillas and bonobos are disappearing from the wild in frightening numbers, as private owners pay top dollar for exotic pets, while  zoos, amusement parks and traveling circuses clamor for smuggled primates to entertain audiences. 

More than 22,000 great apes are estimated to have been traded illegally over a seven-year period ending in 2011. That’s about 3,000 a year; more than half are chimpanzees, the U.N. report said.

 “These great apes make up an important part of our natural heritage. But as with all things of value, great apes are used by man for commercial profit and the illegal trafficking of the species constitutes a serious threat to their existence,” Henri Djombo, a government minister from the Republic of Congo, was quoted as saying.

The U.N. report paints a dire picture of the fight to protect vulnerable and dwindling flora and fauna from organized criminal networks that often have the upper hand.