Soviet space dogs We did not learn enough from the mission to justify the death of the dog...". Belka (Белка, literally, "Squirrel" or alternatively "Whitey") and Strelka (Стрелка, "Little Arrow") spent a day in space aboard Korabl-Sputnik 2 (Sputnik 5) on 19 August 1960 before safely returning to Earth. They were accompanied by a grey rabbit, 42 mice, two rats, flies and several plants and fungi. All passengers survived. They were the first Earth-born creatures to go into orbit and return alive.Strelka went on to have six puppies with a male dog named Pushok who participated in many ground-based space experiments, but never
Soviet space dogs to work only with females. Their training included standing still for long periods of time, wearing space suits, being placed in simulators that acted like a rocket during launch, riding in centrifuges that simulated the high acceleration of a rocket launch and being kept in progressively smaller cages to prepare them for the confines of the space module. Dogs that flew in orbit were fed a nutritious jelly-like protein. This was high in fiber and assisted the dogs to eliminate during long periods of time while in their small space module. More than 60% of dogs to enter space were