No animal on this list has caused its owner more grief or frustration than Eddie, the lovable Jack Russell from Frasier. For a man used to the finest wines, arias, and all of the other clichés of high society, having to deal with his father’s mangy dog on a daily basis seemed to disgust Frasier Crane in nearly every episode. But Frasier usually found himself woefully outnumbered as Eddie was beloved by everyone who stepped foot inside of his posh apartment.

We have no idea how much grueling training the dog who played Eddie had to go through, but this little guy was a more disciplined actor than the entire cast of Twilight. With just a crooked stare and a well-timed whimper, Eddie brought plenty of classic moments to a show that was already one of the best sitcoms of the past two decades.