YOU SAID:

the cat is eating, the dog is not, the rat watches in mockery

INTO JAPANESE

猫は食べている、犬は食べていない、ネズミは嘲笑して見ている

BACK INTO ENGLISH

The cat is eating, the dog is not eating, the mouse is sneering

INTO JAPANESE

猫は食べている、犬は食べていない、ネズミは冷笑している

BACK INTO ENGLISH

The cat is eating, the dog is not eating, the mouse is sneering