Comic Title: Adventures of Rex, the Wonder Dog #46
Publisher: DC (National Comics Publications, Inc.)
Address: 575 Lexington Avenue, New York, NY
Cover Date: Sep/Oct 1959
On Sale Date: July 7, 1959 Copyright Date July 7, 1959
Source: Library of Congress, Periodicals 1959

Newsstand Date July 7, 1959
Source: Newsdealer Magazine, V14 #5
Listed as November

Frequency: Bi-monthly
Cover Price: $0.10
Page Count: 32
Editor: Julius Schwartz

Title: "Canine Buckaroo"
Pages: 8

Feature(s):
Rex the Wonder Dog (of Earth-1)

Writer: John Broome
Penciller: Gil Kane
Inker: Bernard Sachs

Feature Character(s)

• Rex the Wonder Dog (last appearance in Adventures of Rex, the Wonder Dog #46; next appearance in DC Comics Presents #35)

Supporting Character(s)

• Danny Dennis (last appearance in Adventures of Rex, the Wonder Dog #45; next appearance in DC Comics Presents #35)

Villain(s)

• Ed Carroll and his men (no further appearances)

Other Character(s)

• Mary Smith (last name may be an alias as her father's name is Wiley; no further appearances)
• A stagecoach driver (no further appearances)

Synopsis:
Danny and Rex visit a dude ranch. During a stagecoach ride their driver is shot by hunters. Rex is forced to halt the coach when the wounded driver loses control.

Danny and his fellow passenger Mary Smith report the problem to Ed Carroll, the ranch manager. Danny then sees Mary heading for trouble. He sends Rex to help as Mary uncovers a rustling operation run by Carroll. Rex rescues Mary and helps to apprehend the crook.

After Carroll and his men are taken into custody by the sheriff, Danny learns that Mary was sent by her father the ranch owner to investigate suspicious activity. In appreciation for Rex's aid, Mary asks Danny and Rex to return to the ranch the following year.