The earliest memory I can remember is when my dad brought home our first dog. I was about 4 or 5 and I remember my dad coming through the door into the living room. It was night time and I didn't see the dog right away, it had all black fur, but my dad let go of the leash and it ran over to where I was on the couch and jumped up with its paws on the edge. It was a rather big puppy (Breed was Bouvier des Flandres) and I immediately jumped back away from it and climbed up as high on the couch as I could. I eventually got over my surprise and according to my mother ended up showing it a book or something.
It was a rather extraordinary circumstance as this dog became a large part of my childhood as well as the initial shock of the experience. I think my personal identity is about the same, I love dogs as well as having someone to do something with.