All 9 soviet space dogs, top to bottom:

Laika – Sputnik 2, November 3 1957: First living being to reach space, DIED IN ORBIT.

Belka and Strelka –  Sputnik 5, August 19 1960: First living beings to reach space and return ALIVE.

Pchyolka and Mushka – Sputnik 6, December 1 1960: Reached orbit, DIED ON REENTRY after a malfunction activated the capsule’s self-destruct system.

Chernushka – Sputnik 9, 9 March 1961: First dog to return alive without a fellow companion.

Zvyozdochka – Sputnik 10, 25 March 1961: Last dog to go into orbit before the first human, Yuri Gagarin, did, she was also named by him.

Veterok and Ugolyok – Cosmos 110, 22 February 1966: Lasting 22 days in orbit, it became the longest space flight by dogs, they were also the last soviet space dogs.

Space Dogs!