Tracker & Skye is a Friendship between Tracker and Skye. Their merged names are "Trye" and "Skacker".
Canon Trivia
In "Pups Save the Mail", Tracker and Skye worked together to save Carlos's birthday present. Skye was in her helicopter and helped Tracker get even lower to the package for Carlos since his cables weren't long enough and then he was lifted up to safety.
In "Pups Save Bedtime", Skye and Tracker worked together to reunite Hairy the giant monkey with his toy monkey.
In "Pups Save Little Hairy", When Big Hairy accidentally launched Tracker in the sky, Skye saved him from falling to the ground.
Fandom
Although this ship is not that popular, there are a few fanfics about this ship on Wattpad and Fanfiction.net.