No, that was Laika.

There were probably microorganisms and fungi on Sputnik, and before that, things that didn't orbit, like a V2 rocket in 1944: https://en.wikipedia.org/wiki/MW_18014

Laika was the first organism that we knew was alive in space. For a time.

At the time, and for decades after, everyone assumed anything on the outside would dessicate and die immediately.

And long before that, all kinds of organisms lifted up by natural explosion - asteroids, comets, volcanoes.

That sadly was a case of extraterrestrial death.

"In 1999, several Russian sources reported that Laika had died when the cabin overheated on the fourth orbit. In October 2002, Dimitri Malashenkov, one of the scientists behind the Sputnik 2 mission, revealed that Laika had died by the fourth circuit of flight from overheating."