From Battlestar Wiki, the free, open content Battlestar Galactica encyclopedia and episode guide
For the dog in "The Night the Cylons Landed, Part II", see: Skippy.
Skipper barks up at the two Vipers as they leave Earth's atmosphere (1980: "Galactica Discovers Earth, Part II").

Skipper is the name of Willie Griffin's faithful dog.

While playing with Skipper in a nearby open field, Griffin happens across Troy and Dillon's Vipers (1980: "Galactica Discovers Earth, Part I").