So, what does a mouse say? Well in English it squeaks. Obviously.

What noise does a mouse make?

The noise they make most frequently is a high-pitched squeak, almost like a singing chatter, but it can change in pitch and frequency depending on what they're trying to communicate. For example, their squeaks are faster during mating and louder when they find food.

How does a mouse squeak?

When you listen carefully to a mouse squeak though, you will hear a sort of song. The squeaking changes in pitch and frequency depending on what they're trying to communicate. ... This sound is caused by tiny mouse 'fingernails' digging into the surface to get a better grip.