Answered By: Gabe Gossett Last Updated: Jan 14, 2016 Views: 1707
Fun question. As it turns out, according to the book Mammalogy, mammals are required to also have three middle ear bones, a neocortex (and therefore a brain), plus mammary glands. They even have to have a sense of smell, skeleton, and other elements missing in the typical coconut. This leaves the poor Cocos nucifera, despite its shaggy appearance and quasi-milk, out of the running to be a mammal. But the good news is that it still has the distinction of being the largest seed in the world, if you include "sea coconuts."