Tauron

The Taurons are a spacefaring humanoid species from the planet of the same name. They are known for their advanced technology, including matter teleportation.

Biology
According to the Robot's analysis, Taurons are warm-blooded mammalians. They are physically indistinguishable from Humans, but seem to be completely mute, displaying no verbal communication whatsoever. While they require the same environmental conditions as Humans, their bodies have no protection against common Earth pathogens.

Culture and society
The planet Tauron seems to be an important world in the intergalactic scenario and has been known to host trade fairs frequented by merchants from all over the universe. It also houses the headquarters of the Intergalactic Police Force.

Like most humanoids, Taurons form family units and care for their children. They are a technologically advanced species interested in colonizing other planets, and make use of matter teleportation devices.

History
In 1997, a Tauron family was beamed to the planet Preplanis to test it for colonization. Their lack of a verbal language was an obstacle for communication with the Humans of the Jupiter 2 expedition, who were stranded on the planet at the time, and the suspicious nature of Dr. Zachary Smith led him to become convinced that the Taurons were hostile.

Although the Tauron boy bonded with Will Robinson, his body had no protection against Earth diseases, which caused him to become sick after Will sneezed in his proximity. Seeing that his new friend wasn't feeling well, Will took him to a nearby cave to allow him to rest for a few hours. Unfortunately, in the meantime, both the Tauron family and the Jupiter 2 crew (the latter encouraged principally by Dr. Smith) came to worry about their respective kids' whereabouts and suspect the other group of holding them captive.

During a brief and hostile confrontation between the Humans and the Taurons, the two boys returned in safety and the Taurons decided to beam away from Preplanis, presumably to give proper medical care for their son. Having deemed the planet unworthy of colonization, they never returned, but did leave some of their equipment behind, which later allowed Will Robinson to temporarily transport himself back to Earth.

Appearances

 * Lost in Space
 * s01e10, "The Sky Is Falling" (1965)
 * s01e15, "Return from Outer Space" (1965)