It started with Lassie, the Collie. Or maybe it was Rin Tin Tin, the German Shepherd. Or that dog Petey from The Little Rascals, an American Staffordshire Terrier. Asta, the Jack Russell Terrier, from The Thin Man series. Fala, the Scottish Terrier, FDR’s companion. Beethoven, the St. Bernard. 101 Dalmations. Beverly Hills Chihuahua. Bo, the Portugese Water Dog. Dogs made famous by movies and their celebrity owners have inspired many people to get that particular breed. Once