That looks like a pretty good size rat! They seem to be smarter than chipmunks, you can catch those in a live trap pretty easily.
I'm guessing that you have one of those square frame kill traps over the hole. I've used those in the past when I was living in the country, they're quite effective if you can get the critter to set it off.
Yeah it's one of those square traps, I was hoping to get it returning to its den, but it appears too smart to walk through the trigger posts. I will probably end up investing in some live traps this week. My neighbors resort to poison immediately so I want to catch it before they notice. I don't like the idea of hawks/dogs etc eating poisoned animals.