The differences between Tilla and Coco, my two “pups”.  I call my dogs that for we raised them from pups.  They are both black:  only Coco is long haired and female.  Tilla is more athletic, barreled chested and lean.  He was the only dog who could jump the fence and necessitated building it higher.  He is a paradox:  aggressive but at the same time timid.  He still won’t let my son pet him.  He simply goes in the opposite direction from him.  Drop treats in front of the four dogs and he might get most of them.  He is quick.  Coco though can be quite insistent when she want to go out into the yard.  She also likes what I call “crunchies”:  when she hears us crunching on something she immediately plops herself in front of us and wants her share.  When I approach Tilla and act as if I am going to give him a belly rub he rolls on his back immediately.  Coco will demurely and slowly raise one leg and turn on her back to indicate she wants one too when I approach her.  Coco likes her privacy.  She will often go into a room or stay in the yard by herself.  Tilla is more my dog although I often find both of them in my bedroom when I retire, Tilla on my bed next to me and Coco on the side.  I love both dearly.