3 November 1957 (died 4 days later)
In a spaceship.
The dog sent into space in 1957 was named Laika. She was a Soviet space dog aboard Sputnik 2.
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1957. Search wikipedia under Laika.
Laika a dog was the first animal in space it was sent by the soviet union
US didn't send Laika into space, the Soviets AKA the Russians AKA USSR did.
She was a mongrel - named Laika.