Pasteurellaceae is a family of bacteria that includes several genera, such as Pasteurella and Haemophilus. These bacteria are commonly found in the respiratory tracts of animals and can sometimes cause infections in humans. They are typically small, non-motile, and can be either aerobic or facultatively anaerobic. Infections caused by Pasteurellaceae can occur through bites or scratches from animals, particularly cats and dogs. Symptoms may vary depending on the site of infection but can include swelling, redness, and pain. Treatment often involves antibiotics, which are effective against these bacteria.