Sheep Count Flowers

If people count sheep to fall asleep, then.
what do sheep count?

Flowers, says this beautifully fanciful dream of a book. Sunflowers, roses, geraniums, jasmine. And there's lots of OTHER things you probably don't know about sheep.Sheep have neither pajamas nor pillows nor slippers. They tell bedtime stories about rhinoceroses and airplanes. They ONLY fly when they're sleeping, like butterflies circling the sun. In fact, there are sheep that sparkle in the dark like stars and fireflies.

Or are...