Basenji dogs are famously known as "barkless dogs" because they rarely bark like typical dogs. Instead, when excited, Basenjis make unique vocalizations such as yodels, howls, and a distinctive sound called a "baroo," which serves as their version of a bark to express excitement, curiosity, or frustration

. While Basenjis generally do not bark continuously, they can produce single, sharp barks or "fox barks" occasionally, especially when seeking attention or feeling startled. These barks are usually short and spaced out rather than repetitive and loud like other breeds

. The reason for their unusual vocal behavior is linked to their anatomy: their larynx and vocal cords are shaped differently, making it difficult for them to produce typical dog barks. This trait likely evolved to keep them quieter in their native environments, possibly to avoid attracting predators

. In summary, when a Basenji dog is excited, it typically does not bark but instead emits yodel-like sounds, baroos, or short single barks that differ significantly from the continuous barking of other dogs