Big question here, [@Traps]. How could * counts on fingers* a four-year-old survive the zombie apocalypse? Does she have a guardian? Is she not really four? 
How is the amnesia thing going to play out exactly? Is he going to get his memories back? Is he going to form completely new ones? 
And I have two conditions
1. You can have the little girl, just try not to make her annoying 
2. Play your Amnesia character well, try not to fall into tropes. Oh, and for the love of god, be medically correct. Don't bonk him in the head and then suddenly he remembers. 

Also, I'm all for your dog, plus don't let it end up like Rick's horse ;-; 

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[@Remipa Awesome], you're approved. I'll be sure to scatter around shells for you ;P