Dog-tired.

According to Wikipedia, the phrase Dog Days or "the dog days of summer," refers to the hottest, most sultry days of summer. They are a phenomenon of the northern hemisphere that usually falls between July and early September, but the actual dates vary greatly from region to region, depending on latitude and climate. Dog Days can also define a time period or event that is very hot or stagnant. Well, it's been hot and stagnant here pretty regularly, and this dog has picked an odd spot to rest, right in the sun. But I've noticed street dogs do that to warm their bones, poor things.