Endangered species, including tiger body parts, shark fins and pangolin scales, are being offered for sale on Facebook, BBC News has found.
One Chinese user posted videos of a tiger in a cage that was for sale as well as pictures of tiger bones and teeth, while another included two live tiger cubs in a box.
An image showed a tiger head and bones for sale piled up on scales.
A seller told the BBC his products "can be shipped to the UK".
He said a 10cm-long tooth would cost 2,000 Chines yuan (about £213) and that he could sell me tiger bones for 3,600 yuan per kilo (about £380).
