The little brown bat (Myotis lucifugus) is a small species of bat commonly found in North America. It has a wingspan of about 8 to 10 inches and weighs around 5 to 14 grams. This bat is known for its brown fur and large ears, which help it navigate and hunt for insects using echolocation. Little brown bats typically roost in caves, trees, and buildings. They are social animals, often found in large colonies. Unfortunately, their populations have declined significantly due to white-nose syndrome, a fungal disease that affects hibernating bats, leading to increased mortality rates.