In 1966, Soviet dogs Veterok and Ugolyok survived 21 days aboard Kosmos 110; both returned alive, setting a canine spaceflight record that still stands today

In 1966, Veterok and Ugolyok, two Soviet dogs, embarked on a remarkable 22-day mission aboard Kosmos 110, where they faced the challenges of prolonged weightlessness and cosmic radiation. Their journey yielded important insights into the effects of space on living organisms, revealing significant physiological changes upon their return. This historic flight established a benchmark in canine space travel, laying essential groundwork for future human exploration of space.
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