Albert II, a rhesus monkey, became the first monkey in space on June 14, 1949, in a U.S.-launched V2, after the failure of the original Albert's mission on ascent. Albert I reached only 30–39 miles (48–63 km) altitude; Albert II reached about 83 miles (134 km). Albert II died on impact after a parachute failure. Numerous monkeys of several species were flown by the U.S. in the 1950s and 1960s. Monkeys were implanted with sensors to measure vital signs, and many were under anesthesia during launch. The death rate among monkeys at this stage was very high: about two-thirds of monkeys launched in 1940s and 1950s died on missions or soon after landing...
On July 22, 1951, the Soviet Union launched the R-1 IIIA-1 flight, carrying the dogs Tsygan (Russian: Цыган, "Gypsy") and Dezik (Russian: Дезик) into space, but not into orbit.[6] These two dogs were the first living higher organisms successfully recovered from a spaceflight.[6] Both space dogs survived the flight, although one would die on a subsequent flight. The U.S. launched mice aboard spacecraft later that year; however, they failed to reach the altitude for true spaceflight.
On November 3, 1957, the second-ever orbiting spacecraft carried the first animal into orbit, the dog Laika, launched aboard the Soviet Sputnik 2 spacecraft (nicknamed 'Muttnik' in the West). Laika died during the flight, as was intended because the technology to return from orbit had not yet been developed. At least 10 other dogs were launched into orbit and numerous others on sub-orbital flights before the historic date of April 12, 1961, when Yuri Gagarin became the first human in space.
