Bolt

Bolt is #2 on my list of my top 5 favorite Disney movies. Bolt the dog is adopted by a girl named Penny and they both star in a tv series where they fight off crime. The tv series they star in is primarily based on Bolt himself. Bolt adventures off into the world believing that Penny was kidnapped after a scene they filmed. As he adventures out, he meets a cat named Mittens and a hamster named Rhino. 

As Bolt returns back to the studio Penny is stuck inside a vent in the burning building. He goes in after her and remains with her. Bolt barks to alert the firefighters that they are stuck. Penny and Bolt are rescued, then her and her mom adopt Mittens and Rhino and they move to a rural area to continue out their life.