Soviet space dogs of descendants of some of the Space Dogs is on display at the Zvezda Museum in Tomilino outside Moscow. A Russian animated feature film called "Belka and Strelka: Star Dogs" (English title: "Space Dogs") was released in 2010. Pchyolka (Пчёлка, "Little Bee") and Mushka (Мушка, "Little Fly") spent a day in orbit on 1 December 1960 on board Korabl-Sputnik-3 (Sputnik 6) with "other animals", plants and insects. Due to a reentry error when the retrorockets failed to shut off when planned, their spacecraft was intentionally destroyed by remote self-destruct to prevent foreign powers from inspecting the capsule on 2 December
Soviet space dogs the preferred animal for the experiments because scientists felt dogs were well suited to endure long periods of inactivity. As part of their training, they were confined in small boxes for 15–20 days at a time. Stray dogs, rather than animals accustomed to living in a house, were chosen because the scientists felt they would be able to tolerate the rigorous and extreme stresses of space flight better than other dogs. Female dogs were used because of their temperament and because the suit the dogs wore in order to collect urine and feces was equipped with a special device, designed