Marfusha became the first rabbit astronaut in 1959 with its dog partners. [fyeahcosmonauts.tumblr.com]
Country: the Soviet Union
Marfusha, the first rabbit astronaut, made a high altitude test flight on July 2, 1959 aboard an R2-A rocket. Following this on August 19, 1960, another rabbit was sent into space on the Soviet Sputnik 5 and returned alive along with its fellow animal astronauts, which included dogs and mice.