Black Eyes and the Daily Grind

When Black Eyes needed a nap—everybody slept!
The little house pet from Venus didn't like New York, so New York had to change.
He liked the flat cracking sound of the gun. He liked the way it slapped back against his shoulder when he fired. Somehow it did not seem a part of the dank, steaming Venusian jungle. Probably, he realized with a smile, it was the only old-fashioned recoil rifle on the entire planet. As if anyone else would want to use one of those old bone-cracking relics today! But they all failed to realize it made sport much more interesting.
I haven't seen anything for a while, his wife said. She had a young, pretty face and a strong young body. If you have money these days, you could really keep a thirty-five-year-old woman looking trim.
Not on Venus, of course. Venus was an outpost, a frontier, a hot, wet, evil-smelling place that beckoned only the big-game hunter. He said, That's true. Yesterday we could bag them one after the other, as fast as I could fire this contraption. Today, if there's anything bigger than a mouse, it's hiding in a hole somewhere. You know what I think, Lindy?
What?
I think there's a reason for it. A lot of the early Venusian hunters said there were days like this. An area filled with big lizards and cats and everything else the day before suddenly seems to clear out, for no reason. It doesn't make sense.
Why not? Why couldn't they all just decide to make tracks for someplace else on the same day?
He slapped at an insect that was buzzing around his right ear, then mopped his sweating brow with a handkerchief. His name was Judd Whitney, and people said he had a lot of money. Now he laughed, patting his wife's trim shoulder under the white tunic. No, Lindy. It just doesn't work that way. Not on Earth and not on Venus, either. You think there's a pied-piper or something which calls all the animals away?
Maybe. I don't know much about those things.
No. I don't think they went anyplace. They're just quiet. They didn't come out of their holes or hovels or down from the trees. But why?