Ahh, hon, I do the same thing when I'm tired. I yell at the animals cause they just seem to know you're more tired than normal and decide to act out, but they really are just being themselves. You're human, they know you love them.
I can't take naps either, which I think is completely unfair. I can lay down for 15 mintues and rest my eyes, but I cannot fall off or I'll lay there at bedtime with my eyes wide open. Not fun, not fun at all.
Sweet dreams tonight.