This is the best thread ever!
BTW, despite the awesomeness of the 4-legged aliens in Alien 3, am I the only one that thinks that the its body, specifically the head, look far more like an humanoid than an human?
The original Alien even had an entire human skull inside its dome (so it really relates to humans and fits even better with the whole 'host evolution thing') so it's kinda weird that the dog alien retains a human head..
e.g.:
...but then again, I've heard that the Alien 3 production have had some misunderstandings about the design before.