I have a problem with befriending an animal that was trying to eat me a minute earlier, so I tend to eat dogs, rather than feeding them…
I did have a cat for a few seconds once. It ran off immediatly to attack the nearest zombear, and was promptly killed. I also tried to have a flock of manhacks inside my enclosure, but they all tesseracted over the wall while I wasn’t looking. At least Bill will never leave me T.T
Bill and I drove into a new town and found an NPC blasting away at the tide of zombies with her .45. I got out of Bill and helped her kill them all with my assault rifle, then I tried to talk to her to see if she wanted to trade anything. She decided that she would rather be a jerk to the person who had just saved her life, so she told me to and leave before she killed me. Then she opened fire while we were leaving anyway, hurting Bill’s armor. That bitch 
She even chased me down and tried to kill me, but she wasted all her ammunition on the wall of the building I was in so she wasn’t really a threat. I tried to just leave, but she was too fast for me to get away. I had to kick her ass. Game-wise she’s dead, but I’m going to assume I just knocked her out, since I didn’t use any weapons for it. I left her in a field a good distance from town, with her clothes and gun. She had a holy relic (!) and some .50bmg ammunition which are now mine.