Hi, Matthew Razak here (for those who don't remember Cowzilla3). I've come over to Destructoid from Flixist for this post to use my film expertise to let you know some important information: the dog is going to die.
Don't get attached to him/her, it will not make it to the end of the game. When someone points out their dog in any medium and then routinely uses the word emotional directly after it that dog is going to effing die. It will probably save your life, sadly whimper as it lays its head in your lap, look up at you one last time, and then die.
Don't worry. I haven't ruined anything. You're still going to cry. See there's something weird in humans where we can mow down eleven million people in a videogame or watch it in a movie and we're fine. Then one animal dies and BAM, we're on the floor in a ball sobbing uncontrollably while we wonder where we left our childhood blanket as having it is the only possible way we're ever going to feel comfort again.
It's not going to be pretty, but now you've been warned.