Guinea pigs, e.g

Usage examples of rodents.

But the rodents, with their ferocious, ever-growing incisors, could break through the toughest nut and grain seed coats.

The rodents, a new breed of monster Black rats, had finally been gassed, rooted from their underground lairs by the use of ultrasonic machinery and, apart from a few more minor skirmishes with those that had somehow escaped the gas, the threat had appeared to be over.

The attractant compound most favoured by the rodents would be a valuable aid in their destruction.

Over the past few years, rodents in this country have been building up a resistance against anticoagulants.

The search was now on for the smaller holes that would be used as escape exits by the rodents when the underground tunnels were filled with the killer gas.

Noth were much smarter than rodents like the ailu, his kind could not compete.

They were giant rodents, the extravagant relations of dormice and rats.

To the apes, the monkeys were as tough a competition as the rodents had always been.

And meanwhile there was a sharp rise in the types of rodents, like voles and field mice, able to eat grass seeds.

And in the other direction came rodents and insectivores, cats, rhinos, mouse deer, pigs, and primitive types of giraffe and antelope.

But as Capo blundered on, many smaller creatures scampered away underfoot: lizards, rodents, even primitive rabbits.

Nothing moved save the apes, no rabbits or rodents, not even an insect.

Even at the peak of their technical civilization, people had had to be content with keeping rodents out of sight, and out of the food.

And yet this arrogant creature retained the small ears and brown fur of the diminutive rodents from which it had derived.

The rodents had not evolved until some ten million years after the comet impact.