The world's "loneliest dog" has been picked up for a starring role in the new Transformers film.

Freya, a Staffordshire bull terrier with epilepsy, was found when she was just six months old, and taken to a rescue centre in Merseyside where she has lived for most of her life.

She was rejected by an estimated 18,000 potential owners over six years, according to staff.

But, seeing her plight in the news last week, Transformers director Michael Bay decided to step in.

"We gave the Loneliest Dog a role in Transformers," he tweeted, talking about the film which will be released in 2017. "Freya has epilepsy and has been in a shelter her whole 6 year life.

"We are also going to find her a home. If not she will come to my house."

Freshfields Animal Rescue Centre, which has been looking after her, said they were "thrilled" at the opportunity Bay has given her, and excited "at such interest and support from a major film director who is also a dedicated animal advocate."