WASHINGTON, United States (AFP) — US researchers, armed with high-speed video cameras, have revealed the secret to cat grooming. It’s all in the tongue. Just not the way they thought. A cat’s tongue contains 300 little scoop-shaped spines called filiform papillae which they moisten with saliva to clean their fur, said the report Monday in the Proceedings of the National Academy of Sciences, a peer-reviewed journal. Until now, the scientific consensus on the matter was […]