Cosmo (dog) Cosmo (dog) Cosmo is a canine actor. He is a Jack Russell Terrier that is best known for his roles in the movies "Hotel for Dogs" and "Beginners". He was adopted from a breed rescue society by animal trainer Mathilda DeCagny. Cosmo was adopted by dog trainer Mathilda DeCagny from a Jack Russell rescue society in 2007. DeCagny had previously owned and trained other Jack Russell dog actors Moose and his son Enzo, who had played Eddie in "Frasier". DeCagny described Cosmo as being skittish and lacking confidence when she first adopted him, but he was very friendly towards people
Jack Russell Terrier II, the requirement for hunting dogs drastically declined, and with it the numbers of Jack Russell terriers. The dogs were increasingly used as family and companion dogs. Further crossbreeding occurred, with Welsh corgis, Chihuahuas, and other smaller breeds of terrier. The offspring of these crosses became known as "Puddin' Dogs", "Shortie Jacks", or "Russell Terriers". The Jack Russell Terrier Club of America was formed in 1976 by Ailsa Crawford, one of the first Jack Russell terrier breeders in the United States. Size ranges for dogs were kept broad, with the ability of working dogs awarded higher than those in conformation