Portal:Russia/Selected biography/4

Laika was one of the Russian space dogs and the first living being to enter orbit, as a passenger on Sputnik 2, a Soviet spacecraft. Some classify her as the first animal to enter space, although other animals had entered space during sub-orbital flights on previous missions. Laika was found as a stray wandering the streets of Moscow, a female part-Samoyed terrier weighing approximately 6 kg (13 lb). Laika died on November 4, 1957, a few hours after launch, due to stress and overheating. Her true cause of death was not made public until years after the flight, with officials always stating that she was either euthanized by poisoned food or died when the oxygen supply ran out. Russian officials have since expressed regret for allowing Laika to die; to this date, Laika is the only living passenger ever to have been launched into space without the intention of retrieval.