[thrandrall]

I hate to say it, but the sequence from TSR is still one of the better mainstream ones I've seen in some ways - particularly the "reveal" shots. Not necessarily showing the tail growth (hands to hooves just when they want to pick something up, etc), but the way they handle the "noticing" and reactions is well done - better than the average movie version IMO. Of course we'd want to go a lot more in depth re: horns, ears, udders, etc.

You wouldn't necessarily need a full creature for the "bite" though (unless you're tied to your first image set as a reference). And really...as much as I like Black Sheep, they did use a mini-puppet for the first monster. And when you're talking about a cow....why not something more milky related - introduction of chemicals, virus, etc.