History of Animals in Spaceflight
The first animals in space were fruit flies launched by the United States in 1947, followed by the Soviet dog Laika in 1957. These early missions tested survivability in microgravity and radiation exposure. According to NASA, the goal was to understand biological responses before human flights NASA.
From the 1960s through the 1990s, primates, mice, rats, and insects flew on both Soviet and U.S. missions. France launched the first cat, Félicette, in 1963. China sent mice and rats on Shenzhou missions starting in 2002, expanding data on mammalian reproduction in orbit Space.com.
Current Animal Research on the International Space Station
Rodents and Fish in Microgravity Experiments
NASA regularly sends mice and rats to the ISS to study bone loss, muscle atrophy, and cardiovascular changes. The Rodent Research hardware enables long-duration studies that inform countermeasures for astronauts NASA.
Zebrafish and medaka fish are used to observe skeletal and vestibular system adaptations in microgravity. Japan's Kibo module hosts aquatic experiments that also model human bone and immune responses JAXA.
Commercial and Private Sector Animal Studies
SpaceX and Private Research Rides
SpaceX has transported numerous biological payloads under NASA contracts and commercial agreements. Recent missions carried rodents, insects, and cell cultures for pharmaceutical and genetics studies SpaceX.
Forbes Coverage of Animal Research in Orbit
Forbes reports that commercial biotech firms increasingly use ISS animal experiments to test drug delivery systems and gene therapies in microgravity. These studies aim to accelerate drug discovery and reduce Earth-based lab costs Forbes.