You know I looked up the predator feet and saw some things I could change but I'm not sure about the Alien's hands. Could you can be more specific with what you mean.
You know, someone was doing short movies of evenly matched characters fighting each other some time back. There was a Wolverine vs Predator. I believe Wolverine won that one.
Seeing that they can be highly active and don't need to warm up before becoming active I would say warm blooded. However, it is an alien creature so perhaps warm or cold blooded would not apply.