Yes. Just open the unit palette, click on a unit, and it should appear in the model previewer on the left side. You can just click the left arrow or right arrow to switch between animations. For example "Stand - 1" or "Attack - 1" or "Spell Slam".
If your model preview isn't enabled, you may need to enable it manually through Window > Previewer.
Alternatively, you can also view the animation names through Magos' Model Editor (or MDLVis). Just open the program, go to Windows > MPQ Browser. Find the model you want to check the animations of (or go to File > Open if it is a custom model). Next, go to Windows > Animation Controller. All of the model's animations should be listed there.