Records indicate that it was worn by one of the two dogs that participated in Sputnik 5—Belka or Strelka. They were not only the first two Earth-born creatures to go into orbit and survive, but the latter begat a litter of puppies, one of which was presented as a pet to a young Caroline Kennedy by Khrushchev in 1961. Whoa, history.
Joe McGauley is a senior editor at Supercompressor. He hasn't made it to space. Yet.