I often wonder at them being able to tell time, so to speak. Maybe the sun means something to them in that regard. I used to take out the dogs at work, they would be sitting, waiting, at 3;30pm, I got off at 4. My lab seems to know that it's close to 11;00am, time to go. He watches for me to log off the computer. Taking a shotgun out of the safe, is a definite interest raiser. One dog I had used to go goofy, turning onto a road we hunted grouse on, it was 100mi from home, but he knew that corner, and a couple of other spots. Might be the first time in a year, but, he knew it.