Bartonella infections exemplify the interconnectedness of human and animal health, emphasizing the One Health approach. Many Bartonella species have a zoonotic potential, with reservoir hosts often being domestic and wild animals. For instance, B. henselae is commonly associated with cats, while B. bacilliformis has its reservoir in rodents. Understanding the ecology and transmission dynamics of Bartonella between animals and humans is crucial for effective disease prevention and control. Veterinarians, physicians, and public health professionals collaborate to address the complexities of Bartonella infections. Veterinary surveillance, control measures in animal populations, and responsible pet ownership contribute to reducing the risk of zoonotic transmission. Similarly, improved diagnostic techniques and awareness among healthcare providers about the diverse clinical presentations of Bartonella infections enhance early detection and appropriate treatment in human populations. The One Health framework underscores the need for interdisciplinary collaboration to comprehensively tackle Bartonella infections, highlighting the intricate web of interactions between humans, animals, and the environment in the spread and impact of these pathogens.