Laika: Laika, a female dog from the Soviet Union, was the first living creature to orbit the Earth. Unfortunately, she did not survive the mission, which raised ethical concerns.
Belka and Strelka: Belka and Strelka, also from the Soviet space program, became the first dogs to safely return from space.
Pchyolka and Mushka: These two Soviet dogs were part of the Voskhod 2 mission in 1964, during which cosmonaut Alexei Leonov performed the first spacewalk.
Deke and Bonnie: These American squirrel monkeys were part of the Biosatellite 3 mission in 1969. They provided valuable data on the effects of space travel on higher primates.
Ugolek and Veterok: These Soviet space dogs spent a record-breaking 22 days in space aboard the Salyut 5 space station in 1977.
Bion Missions: Multiple Bion missions from the Soviet Union and Russia carried a variety of animals, including dogs, monkeys, and rodents, into space for scientific research.