Run cycle ey? It's a fairly decent run cycle but you might want to consider enunciating the knees, run cycles do not look appealing when it's 2 steps try at least 4 or 5 frames were the character bends his knees. Besides motion concerns, you at least have a good style down the character looks well drawn.
Maybe next time you can convert these little test into gif files if you do not wish to use the forums but this is the wrong place to submit a fairly decent run cycle of some anthropomorphic corgi ninja.

What you have is good, but there's not enough to it, which makes it kinda pointless.

If you want feedback and tips, that's fine, but this isn't the place for this. The Portal is for finished items only. The Forums are what you want. Load this into your Dumping Grounds. It's the third icon from the left at the very top of the page when you're signed in. It looks like a bucket with an arrow pointing down. Once it's loaded there, copy and paste the link into the Forums (Community>Forums). That way, people see it and give tips, which is what you want, but it's not in the Portal, filling your account with low scores or blams, which you don't want.

http://www.newgrounds.com/wiki/he lp-information/content-submission

Good luck! :)

Nice attempt, but you need to space out your frames, and add a few more. For a walk it should be at least 5 frames, and the body should move up and down.