Amanda Seyfried has thrown a birthday party for her dog

The picture featured the dog wearing a party hat, with a balloon behind him and a cake decorated with birthday candles.

The caption read: "Happy 7th, best friend @finnsite (sic)"

The 'In Time' actress and her dog - who has his own Instagram account - are also currently training to take part in the 'Strut Your Mutt' campaign which sees pet lovers partake in a fundraising walk to raise awareness about the killing of pets in animal shelters in America. The walk is typically between one and two miles long, and takes place in cities all over America, with Amanda and Finley taking part in the Los Angeles walk on October 22.

One photo on Finley's account was captioned: "We're getting ready to Strut next month. Join us? Campaign information in link. You can participate virtually or meet us at the LA Colosseum on October 22nd!@bestfriendsanimalsociety @bfas_la (sic)"

Meanwhile, on her own account, the 'Mama Mia!' star wrote: "We're almost halfway to our goal!#strutyourmutt with us and help raise awareness for the over 9,000 cats and dogs killed EVERY DAY in shelters. Adopt! Foster! Spay and Neuter your pets! And donate to shelters! More info on my link. Thank you! (sic)"

And the 'Strut Your Mutt' campaign isn't the only cause that the blonde beauty feels passionately about, as she also believes that women who are "true to themselves" will be able to resolve "the many difficult issues" in the world today.

She said previously: "If society becomes such a place that women can play active roles while being even more radiant and true to themselves, I think we may be able to resolve the many difficult issues facing the world today."