I wanted to share something of a bit more fun insight of my D3 Witch Doctor experience.
I play with manjumas angry chicken. Now every time I change into chicken form, she yells out "julie". Which lets me speculate that the mjo was indeed her pet chicken Julie, and it was killed by one of the prime evils. Which makes totally sense, who wouldn't mobilize entire undead legions just to avenge a dead pet chicken?
On the other hand: the gargs. Their grunting noises are natural and if you listen close enough, the say "F**k you" with every hit. Now this is something maybe a bit difficult to hear, since I only recognised it after I watched this video (https://www.youtube.com/watch?v=xb-ZR9DMEcY)
Now it is impossible to unhear. It gives me the chuckles everytime I play. But it tells me that the gargs are a kind of angry ass mofos, and I presume that they have been raped and killed by the demons. There is no other explanation for their abusive use of curse words.