This is a Big Brown Bat, native to North America, Central America, South America, and the Caribbean. They are generally about 5 inches long, nocturnal, and eat a diet of flying insects. They hunt using a technique called echolocation, where they make noises that actually bounce off objects in front of them, and can then be used by the bats upon being reflected to make an image of their surroundings. Big Brown Bats also hibernate during the winter, which this guy had a problem with. He was found active in someone’s home, probably after beginning hibernation somewhere indoors and then being disturbed by all the activity. He’s healthy, and is just going to be staying with us until it warms up enough for him to be flying around outside again.