Tori Spelling is offering a reward for the safe return of her dog.

The 42-year-old actress - who's best known for her appearances as Donna Martin on 'Beverly Hills, 90210' - has taken to her Instagram account to post a photo of her family dog, Mitzi, and to ask her followers to help bring about the dog's return home.

Besides an image of her adorable-looking pooch, Tori wrote: ''Pls HELP... Our Family Dog MITZI has gone missing! Spread the word. She disappeared 9/15 from Calabasas,Ca. Has collar on but WRONG info. Needs Medication! (sic)''

Tori gave a detailed description of her missing pet and promised whoever returned Mitzi safely would be given a reward.

She wrote: ''No questions asked. Pls return. REWARD. Email at [email protected] She is microchipped thru @muchloveanimalrescue

''She is 6lb long haired terrier mix all white with brown markings on face. Friendly! Will bark but won't bite! Pls hashtag #MitziMissing (sic)''

Tori and her husband Dean McDermott have been putting missing posters around Calabasas, California in a bid to find their pet.

A source told Us Weekly the actress is ''distraught'' about Mitzi's disappearance, and is ''desperately trying to find her''.