Adding stray dogs that you can find out in the world that you can tame and make as companions to help you fend off zombies (fight along side you like in Fallout game) as well as carry supplies. Add dog house, cage to keep them pend in at your base (if you don’t want them to venture out with you) bowls, dog toys like a ball that you can throw and it will fetch. Also, must maintain there health (food, water, etc.) give them the ability to help sniff out loot out in the world. Also, can have 1 to 2 on scaventure hunts with you and be able to breed in case you other dogs die in the world. Can add a side cart to accommodate your companion on mini bike or other vehicles and have a menu for commands to let you dog companion know to guard or run, search for items sneak, stay in the base, etc.