Although birds can do so as well.
Something squeaking and running in my attic at night.
The time you hear it is a big clue.
If the noise is during the day especially in the early morning or evening before sunset then it s almost surely squirrels.
Some people report hearing the rolling of nuts.
Squirrels are the only animals that get into attics that are typically active during the day.
The time of year can determine what type of an attic noise you might be hearing from a raccoon.
If you hear a fluttering noises in the attic around sunset which is when bats are most active you probably have bats in the attic.
However if they are searching for a place to rest they may choose an opening in a wall roof or around a pipe.
Since rodents don t weigh much you typically don t hear them until they start clawing or scratching.
Some pests get into the walls of your home.
There will be no vocal noises heard.
The attic isn t the only place rodents and other creatures seek shelter.
Yes or at least you can narrow it down.
Since bats are nocturnal they will leave their roost at night to feed.
Rats and mice are the most likely culprits for noises in your walls at night.
The one exception is the nocturnal flying squirrel.
If you hear it at night primarily it is either mice raccoons bats or in some cases a flying squirrel.
Signs of bats in the attic.
Squirrels are fast and light so much of the noise sounds like fast scurrying or running usually in the attic near the edge of the roof and sometimes noise in the walls or chimney.
Most raccoon noises in the attic occur at night evening and early mornings.