Police in Kon Tum Province in the Central Highlands are looking for the person advertising tiger and bear claws on Facebook.
A local forest management official said the Facebook account of a person named Van Hung recently posted many photos of presumably animal claws, offering to sell them for at least VND2 million (US$90) each. The account profile lists Kon Tum as the hometown.
News website VietNamNet said the account has been advertising the claws for months, posting hundreds of photos.
One of the posts said the claws were "freshly" cut from tigers and bears.
The person left a mobile phone number and asked buyers to send money first.
A VietNamNet reporter called the number on March 11. A man, introducing himself as Hung, said he had the paws of the wild animals smuggled from Africa to Vietnam through the Laos border.
He said he then collected the claws for sale.
The ads have been removed.