It was captured by humans during the Man-Kzin Wars.
The family of Carlos Wu secretly moved to Fafnir from Earth. Upon reaching Fafnir, Feather Filip shot Beowulf Shaeffer in the chest with an ARM punchgun, but Carlos managed to escape with Tanya and Louis and Sharrol Janss killed Feather by cutting her throat, then decapitating her. Sharrol then placed Bey's head in Carlos's nanotechnology-based AutoDoc where it reconstructed his body, sizing it to the Intensive Care Cavity of the autodoc, which was tailored to Carlos's body proportions. Eventually, Beowulf recovered, was reunited with Sharrol, and had two more children with her, Jeena and an unnamed second child.