A marmotte (marmot), videoed on the route up to Refuge Blanc in the Ecrins National Park, France, which was so tame that it can be seen licking the leg of a Frenchman who approached it.
If you live in a region where humans are not aggressive, it is likely worth the risk to approach them for the salt on their skin. Humans are known to always have plenty of salt, so they don't mind sharing.