We are dog (LCA)
Today, it is a known fact among many people that humans and apes are very closely related. Our social behaviors, our physical capabilities sexual behavior and creative tendencies all mirror that of our distant African mothers. DNA- our building blocks, the instructions our bodies read to develop function and grow are 99% identical to our ape brethren.
The millions of years it takes to create change is nothing more than a building upon, a bettering of what once was. With every life form on the planet there was once a connection between that and us. Take the awakening example of holding a human baby, it is a heart throbbingly beautiful sight to behold, we reflect at it in such a way as almost to reflect into ourselves, that was 'us' once, and it will be us too soon.
It is the same reflection just on an unfathomably long scale when we look into the eyes of our dog. Biologically dogs and humans share a staggering 84% of their DNA with each other. This enables them to the susceptibility of developing many of the same illnesses and ailments humans are affected by: cataracts, cancer, allergies, epilepsy and many more. Enthusiastically however many of their behavioral tendencies are also quite like humans which has led pondering minds to conduct many interesting studies in every branch of psychology, specifically that of cognition emotion and hormonal faculties.
On an even deeper more interesting note the creative mechanisms behind our biological differences speculatively separate somewhere between 90 and 100 million years ago. That is how far back dog and human shared a common ancestor (LCA). All of our senses: our smell, our vision, our hearing and our sensitivity to touch; many of our emotions such as: anger, jealousy, sexual desire; many of our needs: food, water, shelter, mental stimulation and reproduction are all shared with and developed exactly the same, on the same building blocks as all of that which has been before us.
In utero during the first developmental stages the formation of both dog and human is so similar it is hardly if at all distinguishable. It is only that 16% difference in our genomes that separate us in our later stages but enable us to harbor all of the instincts in the natural world. To look into any eye, dog ape or man, is to look at the face of a human baby, millions of years ago.