Squirrels make a variety of sounds depending on the situation and the individual squirrel. Some common sounds that squirrels make include:

• Chirping or chattering: Squirrels may make high-pitched chirping or chattering sounds when they are excited or agitated.

• Barking: Squirrels may make barking sounds when they feel threatened or when they want to communicate with other squirrels.

• Whistling: Squirrels may make whistling sounds when they are happy or content.

• Scratching: Squirrels may make scratching sounds as they move around, particularly when they are climbing or digging.

• Chewing: Squirrels may make chewing sounds as they gnaw on objects, which can be loud enough to be heard through walls or ceilings.

Squirrels also have a wide range of vocal features, including squeaks, barks, and grunts. When distressed, baby squirrels make high-pitched, chirping noises similar to birds. Additionally, squirrels use alarm calls made up of screeches, rattles, barks, and snorts to protect themselves and their territories. They also have warning calls, such as the KUK KUK and QWAA, which alert other squirrels to danger.