Comic Title: Challengers of the Unknown #1
Publisher: DC (National Comics Publications, Inc.)
Address: 480 Lexington Avenue, New York, NY
Cover Date: Apr/May 1958
On Sale Date: February 11, 1958 Copyright Date February 11, 1958
Source: Library of Congress, Periodicals 1958

Frequency: Bi-monthly
Cover Price: $0.10
Page Count: 32
Editor: Jack Schiff

Title: "The Human Pets"
Pages: 10

Feature(s):
Challengers of the Unknown (of Earth-1)

Writer/Penciller: Jack Kirby
Inker: Marvin Stein

Reprinted In:
Challengers of the Unknown #79 (1973)
Challengers of the Unknown Archives Vol. 1 HC (2003)
Showcase Presents Challengers of the Unknown Vol. 1 TPB (2006)
Challengers of the Unknown Omnibus HC (2012)
Challengers of the Unknown by Jack Kirby TPB (2018)

Feature Character(s)

• Challengers of the Unknown (last appearance in Challengers of the Unknown #1; next appearance in Challengers of the Unknown #2)
• Ace Morgan (last appearance in Challengers of the Unknown #1; next appearance in Challengers of the Unknown #2)
• Prof. Haley (last appearance in Challengers of the Unknown #1; next appearance in Challengers of the Unknown #2)
• Red Ryan (last appearance in Challengers of the Unknown #1; next appearance in Challengers of the Unknown #2)
• Rocky Davis (last appearance in Challengers of the Unknown #1; next appearance in Challengers of the Unknown #2)

Other Character(s)

• An alien child and his parents (no further appearances)
• Abner Jenkins and his unnamed wife (farmers; no further appearances)
• Myrtle (a telephone operator; no further appearances)

Synopsis:
The Challengers are taken aboard an alien ship that lands on isolated farmland. The ship takes them to an alien world where they become a child's pets. The Challs escape from captivity and alert the boy's parents. The boy is scolded for capturing the Earthlings. The aliens then return the Challengers to Earth.