There are a lot of strange animals on the menu in Vietnam, but usually you can tell what they are. This entree wasn’t even documented until recently. From CNN:
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It may be an old menu standby to Vietnamese diners, but it’s turned into a smorgasbord of discovery for scientists.
Researchers have identified a previously undocumented species of all-female lizard in the Mekong River delta that can reproduce itself by cloning, and the story of how it was discovered is almost as exotic as the animal itself.
Leiolepis ngovantrii is a small lizard found only in southern Vietnam. A Vietnamese reptile scientist who came across tanks full of the remarkably similar looking reptiles at small diners in rural villages in Ba Ria-Vung Tau province became intrigued when he noticed that all of the lizards appeared to be female.
So the scientist, Ngo Van Tri of the Vietnam Academy of Science and Technology, contacted an American colleague about what he was seeing.