Skip to content
— CH. 1 · STRAY ORIGINS AND SELECTION —

Laika

~6 min read · Ch. 1 of 6
6 sections
  • A stray mongrel from the streets of Moscow became the first animal to orbit Earth. Soviet scientists chose this three-year-old female because they assumed strays had already learned to endure extreme cold and hunger. Her true pedigree remains unknown, though she was likely part husky or other Nordic breed. Technicians gave her several names before settling on Laika, which translates to "Barker" in Russian. Some accounts suggest technicians renamed her from Kudryavka due to her loud barking. The American press dubbed her Muttnik as a pun on Sputnik. Three dogs were trained for the mission: Albina, Mushka, and Laika. Vladimir Yazdovsky and Oleg Gazenko conducted the training. To adapt them to the tiny cabin, they kept the animals in progressively smaller cages for up to twenty days. This confinement caused them to stop urinating or defecating and made their condition deteriorate. Laxatives did not improve things. Only long periods of training proved effective. They placed the dogs in centrifuges that simulated rocket acceleration. Their pulses doubled and blood pressure increased by significant amounts during these tests. Ten days before launch, Yazdovsky selected Laika as the primary flight dog. He took her home to play with his children just before the mission. In a book chronicling Soviet space medicine, he wrote that Laika was quiet and charming. He stated he wanted to do something nice for her because she had so little time left to live.

  • Nikita Khrushchev demanded a spacecraft launch on the 7th of November 1957 to celebrate the fortieth anniversary of the October Revolution. He specifically wanted to deliver a "space spectacular" that would stun the world with Soviet prowess. Construction had already started on Sputnik 3, but it would not be ready until December. Engineers needed to build a new simple satellite to meet the November deadline. Sergei Korolev proposed placing a dog in the satellite, an idea quickly adopted by planners. The official decision to launch Sputnik 2 came between October 10 and October 12. This left less than four weeks to design and build the entire spacecraft. Most elements were constructed from rough sketches rather than detailed blueprints. The craft included instrumentation for measuring solar irradiance and cosmic rays alongside the life support system. A fan activated whenever cabin temperature exceeded safe levels to keep the dog cool. Enough food in gelatinous form was provided for a seven-day flight. Chains restricted movement to standing, sitting, or lying down since there was no room to turn around. An electrocardiogram monitored heart rate while other instruments tracked respiration and blood pressure. The mission sparked global debate because the spacecraft was not designed to be retrievable.

  • Sputnik 2 launched into low orbit on the 3rd of November 1957 from Baikonur Cosmodrome. At peak acceleration, Laika's respiration increased to three or four times her pre-launch rate. Her heart rate jumped from 103 beats per minute before launch to 240 beats during early acceleration. After reaching orbit, the nose cone jettisoned successfully but the Block A core did not separate as planned. This prevented the thermal control system from operating correctly. Some thermal insulation tore loose, raising cabin temperature to dangerous levels. Three hours of weightlessness passed before Laika's pulse settled back to 102 beats per minute. This took three times longer than ground tests indicated, showing immense stress she endured. Early telemetry showed she was agitated but eating her food. No further signs of life arrived after approximately five to seven hours into the flight. Scientists had planned to euthanize Laika with poisoned food. For many years, conflicting statements claimed she died from asphyxia when batteries failed or that she was euthanized. In October 2002, Dimitri Malashenkov revealed she died by the fourth circuit from overheating. It proved practically impossible to create a reliable temperature control system in such limited time constraints. Over five months later, Sputnik 2 disintegrated during re-entry on the 14th of April 1958.

  • The true cause and time of Laika's death remained hidden until 2002. The Soviet government initially claimed she was euthanized prior to oxygen depletion. Later reports stated she died when her oxygen ran out on day six. Many rumors circulated about the exact manner of her death over the decades. In 1999, several Russian sources reported she died when cabin overheated on the fourth day. Dimitri Malashenken presented a paper at the World Space Congress in Houston, Texas confirming the truth. He explained that creating a reliable temperature control system was impossible within the tight schedule. Oleg Gazenko expressed regret for allowing her to die after the collapse of the Soviet regime in 1998. Future space missions carrying dogs were designed to be recovered. The first successful recovery followed the flight of Korabl-Sputnik 2 with Belka and Strelka safely returning to Earth. Nonetheless, four other dogs later died in Soviet space missions. Bars and Lisichka were killed when their R7 rocket exploded shortly after launch on the 28th of July 1960. Pchyolka and Mushka died when Korabl-Sputnik 3 suffered an emergency and had to be detonated.

  • The ethical issues raised by this experiment went largely unaddressed during the height of the Space Race. Newspaper clippings from 1957 show press focused initially on political perspective rather than Laika's health. Laika's retrieval or lack thereof only became an issue later. In the United Kingdom, the National Canine Defence League called on all dog owners to observe a minute's silence each day she remained in space. The Royal Society for the Prevention of Cruelty to Animals received protests even before Radio Moscow finished announcing the launch. Animal rights groups asked members of public to protest at Soviet embassies. Others demonstrated outside the United Nations in New York. Laboratory researchers in the United States offered some support for Soviets before news of death emerged. Open criticism was difficult in Warsaw Pact countries due to political censorship. A Polish scientific periodical published in 1958 discussed the mission as regrettable. Krzysztof Boruń criticized not bringing Laika back alive as undoubtedly a great loss for science. In the Soviet Union, neither media nor books openly questioned the decision to send a dog into space. The mission sparked global debate on mistreatment of animals and animal testing to advance science.

  • Laika is memorialized through statues, stamps, songs, and books created to honor her sacrifice. A statue and plaque exist at Star City, the Russian Cosmonaut training facility. Created in 1997, Laika stands behind cosmonauts with ears erect. The Monument to the Conquerors of Space in Moscow includes her figure. On the 11th of April 2008 officials unveiled a monument of her poised on top of a rocket near the military research facility where staff prepared her flight. Stamps and envelopes picturing Laika were produced alongside branded cigarettes and matches. In 1988 Spanish band Mecano released a song paying tribute to the flight. The end of the song alludes to her death stating one less dog remains on Earth while one more star appears in sky. Karl Schroeder wrote a pessimistic near future novella titled Laika's Ghost exploring pragmatic world themes. The 2007 graphic novel Laika by Nick Abadzis won several awards including multiple Eisner Awards. It gives fictionalized account told from multiple points of view featuring politicians, scientists, and engineers. Norwegian singer Emmy released a song in 2025 titled Laika Party competing in Irish Eurosong selection for 2025 contest. The song tells story about wishing Laika had never died and was living happily in space.

Common questions

Who was Laika the Soviet dog?

Laika was a three-year-old female stray mongrel from Moscow who became the first animal to orbit Earth. Her true pedigree remains unknown though she was likely part husky or other Nordic breed.

When did Sputnik 2 launch with Laika inside?

Sputnik 2 launched into low orbit on the 3rd of November 1957 from Baikonur Cosmodrome. The spacecraft disintegrated during re-entry on the 14th of April 1958 after over five months in space.

How long did Laika survive after launch on Sputnik 2?

No further signs of life arrived after approximately five to seven hours into the flight. In October 2002 Dimitri Malashenkov revealed she died by the fourth circuit from overheating due to failed thermal control systems.

Why did Nikita Khrushchev demand a spacecraft launch on the 7th of November 1957?

Nikita Khrushchev demanded a spacecraft launch on the 7th of November 1957 to celebrate the fortieth anniversary of the October Revolution. He specifically wanted to deliver a space spectacular that would stun the world with Soviet prowess.

What happened to Laika's body after Sputnik 2 re-entered Earth's atmosphere?

Over five months later Sputnik 2 disintegrated during re-entry on the 14th of April 1958. Her remains burned up along with the spacecraft as it fell back to Earth.