How the animal kingdom says I love you, does not depend on vertebrates or invertebrates. It depends on the brain and the heart!
Read this fascinating summary of the Octopus, he does not have a spine, but he has brain! And in the times we live in…
How the animal kingdom says I love you, is a lesson to homo sapiens. Heart and head work in unison!
Wen-Sung Chung, Queensland Brain Institute