Cats may look cute and cuddly, but inside they’re cold-blooded killers. So when cats roam outside, they’re likely to find, hunt, and kill anything they can catch which includes mice, birds, squirrels, and anything else that wants to be alive.
Cats do this because they enjoy sharing their kills with their owners. Then again, cats may do this because they also enjoy watching their owners freak out as they find a way to dispose of the dead carcasses the cat keeps bringing inside.
To learn more about why cats bring dead animals to their owners, click here.