I have remembered some further examples to add to the list above, which happened during that same game.
I’m not sure if it has anything to do with the new zombie movement code that Kevin has recently added but, either way, animals are no longer able to hit anything.
The 1st of these ‘extra’ instances involved what I have fondly named the ‘Elastic Cougar’. In my game, I was trying to reach a second shelter, that I had spotted on the map from where I spawned in. Having agroed me, the cougar chased me for quite some time, but was unable to hit me. While it was doing this, I casually moved through a forest, looking for a heavy stick. Eventually, I reached the other shelter, and managed to get inside and close the door, without the cougar getting in. The uber-ninja NPC that I mentioned in my previous post also owned a cougar, before his encounter with the Jabberwock. He killed the cougar in 3 hits and, of course, it didn’t get 1 hit in on him.
At one point, I also had an unwanted meeting with a moose and, from experience, I know just how bad-ass they can be in a fight. Except that this particular individual was unable to hit me, despite cornering me in a forest against a row of impassable trees. So I battered it with my hockey stick and went on my way.
The third and final example involved 2 tough zombies, who were ganging up on a giant crayfish. In desperate need of a drink, I was heading to a gas station in a swamp and, while sticking to the road, I watched the battle unfold before me. There was ABSOLUTELY no mention of the giant crayfish evening trying to hit back, as the 2 tough zombies did their work. Following this, they then murdered a gracken, before I killed them both with my hockey stick.
So, in short, I think something may have been magically ninjad from the code-base.
I hope someone can find out what the problem is and fix it… 
