Jake (New Caprica)
From Battlestar Wiki, the free, open content Battlestar Galactica encyclopedia and episode guide
Jake is a dog on New Caprica that has a yellow bowl. The bowl serves as an indicator flag for a dead drop. When this bowl is flipped over, the inside source within the Baltar faux administration notifies the New Caprica Resistance of important information to be used to aid the group (Occupation).
Jake's involvement with the resistance is known to President Lee Adama, who calls him a hero of New Caprica. As his previous owners could no longer care for the dog, Adama gifts Jake to Romo Lampkin after he discovers that Lampkin's cat, Lance, died weeks prior (Sine Qua Non).
Jake is seen being walked by Lampkin aboard Galactica when Lee Adama appoints him President of the Colonies (Daybreak, Part I). He presumably leaves Galactica with Lampkin and settles with him on New Earth, though he is not seen with Lampkin since landing on the second Earth.