Wow, that's lots of great input for you Eagle...and note it's eaglerapids, not eagleeye
. Reeftool may have hit this one on the nose...your diopter needs to be dialed in for your eye. You may want to get a fresh set of eyeglasses if you are a "lens wearer." My bro in law is an optometrist (near you in Spokane) and he grinds me lenses that err to the side of helping my photo work. It's subtle, but he gets what we are trying to do.
I pretty much never use autofocus for animal work. That's mostly a personal preference. It's partly a factor of autofocus inadequacies--Pentax problems or otherwise--due to the necessity of focusing on the near side eyelashes and the lack of time to recompose...even a slew of autofocus points doesn't remedy the issue and timing problem.
To help avoid the front and back focus issues, you may want to try what I typically do--I rock the focus back and forth from front to back focus a few times so I'm more confident that I have the eyelashes each time. Yep, sometimes the animal does something cool while I'm still rocking focus back and forth and I miss it--that's the norm with animal work. You'll get maybe 10% focused correctly on moving critters, and less than that percentage where the animal places itself in a great composition for you. Why those stupid critters can't see the distracting branches and place themselves better, I don't know...point is this is a game of percentages and odds. If your style (whether auto or manual focus) returns about 10% sharp renderings, and of those only 10% are decent compositions then you can expect one shot per 100 to be up to snuff both for focus and for composition. On pure odds, you'll want to shoot lots and lots and lots of images.
On a recent elk shoot I blasted 400 and some odd images in less than 2 hours. And maybe half a dozen images are probably solid enough to submit to magazines without embarrassement. (OK, some of those shots I got 30 identical good images, but I only count that as one. Editors can't stand repetitious submissions) I'm not saying you should hold the continuous shooting shutter button down, but you should just keep shooting and shooting and shooting and shooting etc. ad infinitum.
So stop wanting each shutter press to result in something impressive. Shoot more, practice more and you'll occassionally get something great!