Rasputin

Rasputin was a white pet dog Penelope Halliwell owned until he ran away in 1994.

In 2001, Phoebe cast a 'Lost and Found' spell, which caused Rasputin to return home. He immediately jumped on the furniture. Piper walked in and yelled at him to get off, but then realized that he'd been unlost. After saving Tom Peters and undoing the spell, Phoebe returned Rasputin to the family he'd been living with. ("Wrestling With Demons")