Rate it: (5.00 / 1 vote) lab rat: A person or group used as the subject of an experiment or test, especially unwillingly or unwittingly. (5.00 / 1 vote) rat race: An activity or situation which is congested with participants and which is hectic or tedious, especially in the context of a busy, modern urban lifestyle. Rat did kill baby pigeons. 11. Once you're an auction rat, it sticks with you. As he looked, the great rat dropped from the rope on to the old oak chair. I'm killing the rats and stuff. 9. The only indigenous land mammalia are a small rat and a few curious species of bats. 5. 17. rats. The biology students had to dissect a rat. He used some cheese to trap the rat. 1. 239+16 sentence examples: 1. 8. I've got a rat in my ranks. I had another bout on Monday, with Eugene Phillips, who at eight was tougher than a latrine rat. 239+16 sentence examples: 1. 13. 14. 6. 18. rat. Rats sentence examples. 9. 5. Rat sentence examples. The hungry rat ravened down the poison bait. 26. 8. Rats and mice, especially the guayabita (Mus musculus), an extremely destructive rodent, are very abundant. 28. 4. The rat is a medium-sized rodent.Rats are omnivores, they eat lots of different types of food.Most rats are in the genus Rattus.There are about 56 different species of rats. You've got more than one rat to worry about. 3. 71. 3. Leather pinions must be protected from rats, which eat them freely. The best known rats are the black rat (Rattus rattus), and the brown rat (Rattus norvegicus).These two are known as Old World rats.The group has its origins in Asia. A rat squeaked and ran into the bushes. The rat poison and insecticide was taken fr 2. 2. So 12. But you promised to help us, you rat! 4.