Look at those sad eyes. Look deep into them, and you'll see that they aren't much different than the same eyes you see in the mirror on Monday morning. Where did the weekend go? How could it possibly be Monday? Why am I up at this God-forsaken hour, when just yesterday I was peacefully snoozing at the exact same time?
Our four-pawed brethren might not have to make it through the slog we call Monday, but they certainly get how we are feeling about it.