In most incarnations of the series, Scooby is regarded as a unique Great Dane dog who is able to speak in broken English, and usually puts the letter "R" in front of words and noises made. Other incarnations, such as "A Pup Named Scooby-Doo", present talking dogs as quite common in the larger fictional universe as nobody in Coolsville seems bothered by his speaking ability. In recent years (most notably in "Scooby-Doo! Mystery Incorporated"), Scooby is able to speak in complete sentences and has more dialogue, though partially retaining his speech impediment. He consistently shows about the same level of intelligence as his friends, while also being subject to the same knack for clumsiness and moments of being dimwitted as well.