Sept. 16, 1961 - It is not only humans who are bothered by the Communist wall across Berlin - dogs are affected as well. A fox terrier named Mausi finally got back to his mistress in the West today. An East German policeman at Friedrichstrasse led the dog on a leash to the border and then turned him loose. Mausi dashed across the border and leaped into the arms of his owner, a hospital nurse, and licked her face. She had been waiting three days at the crossing point to see if her relatives in the East could act on her message to send Mausi back. The policeman remarked to Western photographers: "Now you've got another one who escaped."