launched on 22 February 1966 on board Cosmos 110, and spent 21 days in orbit before landing on 16 March. This spaceflight of record-breaking duration was not surpassed by humans until Soyuz 11 in June 1971 and still stands as the longest space flight by dogs. The two dogs showed signs of "cardiovascular deconditioning" with dehydration, weight loss, loss of muscle and coordination and took several weeks to fully recover, though they showed no long-term issues. See also Animals in space Cosmo (comics) Félicette, first cat in space List of individual dogs Monkeys and non-human apes in space Museum of Jurassic Technology, which has an eternal flame dedicated to Laika and a portrait gallery of the USSR's space dogs Sputnik program Voskhod program References External links A book chapter about biological experiments in geophysical rockets Space Today Online article about animals sent into space One Small Step: The Story of the Space Chimps, Official Documentary Site Documentary features rare footage of Laika and others. Soviet dogs Individual dogs Sputnik Crewed space program of the Soviet Union Space dogs Space dogs Animal testing in the Soviet Union Dogs in human culture