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 for the part. Actor Gene Hackman's pet in the 1995 movie "Crimson Tide" was a smooth-coated Jack Russell terrier named "Bear". Max, a Jack Russell terrier, played the role of Milo who is one of Stanley Ipkiss's only friends in the 1994 U.S film "The Mask" starring Jim Carrey. Max also played the female dog Audrey in the 2000 film Mr. Accident. In the 2009 movie "Hotel for Dogs", Friday, one of the main characters is a Jack Russell, played by the dog actor Cosmo. Cosmo went on to appear in the films "" and "Beginners". Jack Russell: Dog Detective