what was the name of the dog?
Laika.
Laika
Laika (; c. 1954 – 3 November 1957) was a Soviet space dog who became one of the first animals in space, and the first animal to orbit the Earth. 
when did russia put a dog in space 3 November 1957.
wiki:25613715
Laika [SEP] Introduction
Laika (; c. 1954 – 3 November 1957) was a Soviet space dog who became one of the first animals in space, and the first animal to orbit the Earth. Laika, a stray mongrel from the streets of Moscow, was selected to be the occupant of the Soviet spacecraft Sputnik 2 that was launched into outer space on 3 November 1957. Little was known about the impact of spaceflight on living creatures at the time of Laika's mission, and the technology to de-orbit had not yet been developed, so Laika's survival was never expected. Some scientists believed humans would be unable to survive the launch or the conditions of outer space, so engineers viewed flights by animals as a necessary precursor to human missions.