The herd would begin to move nervously, slowly at first and then at a trot. The other saber-toothed cats lie waiting ahead, hidden in the yellow grass, like a living trap.
Their wide-open jaws spung suddenly. The great dagger-like canines, slashing through arteries and wind-pipe, tore out the throat of a horse in the beat of a hoof-fall.
As time went on, younger animals took over the pride. The old male and his mate found it more comfortable hunting on their own. They were careful to avoid lion prides and thieving wolves.
They hunted the edges of the wide open praires concentrating mostly on paleollama. The male llamas climed the nearest hill in order to survey the landscape. They let out a sharp whistle, alerting the herd, when they saw cats stalking. The old couple missed in the hunt as often as they were successful.
Then she died. He stood over her out-stretched body for a day and a night, until hunger drove him off. Now he was on his own.
It had been a lightning error, the misjudgment of a split second as the horse's hoof snapped his tooth. After that he could only hunt rats and rabbits - anything small enough to subdue. Once he had even tried to gnaw open the shell of a gopher tortoise. He'd gotten nowhere. Rats and lizards were fast for such slim fare. They wore him out. Now, he just lay there, in the heat, panting and pawing away the flies.