The word “animal” comes from the Latin animalis, meaning having breath, having soul or living being.[1] In everyday non-scientific usage the word excludes humans – that is, “animal” is often used to refer only to non-human members of the kingdom Animalia; often, only closer relatives of humans such as mammals, or mammals and other vertebrates, are meant.[2] The biological definition of the word refers to all members of the kingdom Animalia, encompassing creatures as diverse as sponges, jellyfish, insects, and humans.[3]