Also here is a short video demonstrating what the T-rex can do in UDK [ame="http://www.youtube.com/watch?v=lheeSc9Gabc"]UDK Realtime T-Rex - YouTube[/ame]
Lol, that T-Rex tipping over animation is great. I second what people are saying bout it though, I thought that the T-rex's tail was a lot bigger and was used for balance.
Current progress: So I'm setting out on trying to make a realistic T-Rex with feathers and all. Here's the first anatomy pass. Let me know if any of the landmarks look wrong sized or anything like that. References: