In Russian, the sound a cat makes is expressed as "мяу," which is pronounced as "myau." Just like in English, this onomatopoeic word captures the essence of a cat's meow. If you want to use it in a sentence, you might say, "Кошка мяукает" (Koshka myaukayet), meaning "The cat is meowing." So, the next time you want to talk about cats in Russian, just remember to use "мяу"!