Knick-knack, paddywhack give the giraffe a bone?

Image Source: Kate Wong, Scientific American

Until now, I had heard of giving a dog a bone, but never a giraffe. They reportedly chew on bones as a source of minerals. This is also true for another herbivore, the desert tortoise. Who knew?

Source:
Esque, T.C., and E.L. Peters. 1994. Ingestion of bones, stones, and soil by desert tortoises. : Biology of North American Tortoises. Fish and Wildlife Research, Technical Bulletin 13. 105-1 p.

Scientific American