Does this mean "sending them to space" or "putting them on the earth orbit"? I think the latter.
41)Animals went to space before people did, serving as test pilots who made sure space and rocket travel would be safe for humans. In the 1950s, no one knew what would happen to living things in space. Scientists wanted as much information as possible before sending a human there. So ‘dognauts’ and ‘chimpnauts’ were recruited as the first true space pioneers. The first animal in space was a Soviet dog named Laika, who traveled aboard Sputnik Ⅱ in 1957. America’s National Aeronautics and Space Administration put chimpanzees into orbit in 1959. One chimp spent a year training for his flight! Today creatures from bees to bullfrogs to jellyfish become space cadets so astronauts can study their behavior and the effect of weightlessness.