Does anyone here do much running with a dog?

After 7 months of no running due to what turned out to be a big herniated disc, I got rehabbed and started running again in late January. Most of my running since then has been with my dog. It's awesome - she's always up for it (never "not in the mood"), and she's going to make a speed demon out of me yet! Although I'm still not fast by any means, I've never seen my pace increase so regularly week by week. We're going to do a Dog-n-jog event weekend after next. It's a 1 mile dog jog or a 5K run to benefit the local Humane Society. I think the 5K is for people only, so we'll do the 1 miler. Should be a blast.

It's really been challenging trying to find good information sources on running with a dog. I want to make sure she doesn't overheat or get injured, so I tend to stay close to home and drop her off if she slows way down and starts panting. I also either carry water for her or stop at home for a drink after 15 minutes or so, which seems to be when she gets thirsty on a mild day. What's tricky is that she hates it when I drop her off at the house and go back out without her, so she pushes to go back out with me. I'm afraid of her overdoing it. She's an American Eskimo and she's only 3 years old so she's probably pretty resilient, but I don't know what to watch for as far as potential injuries. Vets don't seem to be able to offer much information - it's like a super-specialized subject.

Anybody know of any good resources on this? (Or have any suggestions from experience?)