Answer: laika

AnswerCrossword Clue
LAIKA

First dog in space

LAIKA

"Sputnik 2" passenger

LAIKA

Sputnik rider

LAIKA
First dog to orbit Earth
LAIKA
Dog on Sputnik 2
LAIKARussian space dog
LAIKASputnik 2's passenger
LAIKAMartyr to science.
LAIKAFamous canine.
LAIKASpace Cadet of a sort.
LAIKASpace pioneer.
LAIKASputnik passenger.
LAIKADog in Sputnik II.
LAIKASoviet space-dog
LAIKASputnik's dog
LAIKASpace dog
LAIKATail-wagging cosmonaut
LAIKASpace traveler of 1957
LAIKASoviet space dog
LAIKASoviet space dog of 1957