Like the previous head animation [link] I used "Morpher" to create the in-between frames. However this was actually the first animation I made using the program, so hadn't worked out all the bugs. You'll notice the transitions are a little more jerky in this. This is because I didn't realize that Morpher defaulted to an "ease-in/ease-out" method of generating the timing, and I didn't catch on until it was finished. Unfortunately, the program was pretty slow, so I didn't bother to re-render the entire affair after I figured it out. I did apply it to the animations I did afterwards, though.
I ultimately refined the design of the final stages, but this served as a useful study.
I like the way you chose to handle the thumb/dewclaw by not adding extra paw pads. You only included what pads a real wolf would have. I really like it when people think things out like that.