The 'Mysterious Girl' singer visited the world famous Battersea Dogs & Cats Home on Tuesday morning (4 February) to name two pooches in honour of his new project Mr Peabody & Sherman.
Peter, 40, performs the DreamWorks animated movie's official song 'Kid'.
The new dad looked thrilled to be at Battersea, where he named one of the home's residents Mr Peabody and another one Sherman.
"I'm so excited to be reuniting with Battersea Dogs & Cats Home - a fantastic charity who bring happiness to so many families across the UK through their dogs," said Peter.
Battersea has rescued, reunited and rehomed over 3.1 million dogs and cats since it opened in 1860.
Peter actually adopted a rescue pug from the home back in 2012, after falling in love him during a visit to the centre with his kids Junior, now eight, and Princess, now six.
"I personally adopted a dog from them and they were amazing," added Peter. "I can't think of a better way to mark my new partnership with DreamWorks Animation on their brand new family movie, Mr. Peabody & Sherman, than by naming two of Battersea's dogs after the film's two main characters.
"Now we just need to find them a new home."
Mr Peabody & Sherman features the voice of Modern Family star Ty Burrell. It's about a clever dog and a mischievous young boy who end up on a crazy adventure thanks to their time machine.
Peter took kids Junior and Princess to see it at the weekend, later saying they'd loved the animated adventure. Everyone else can catch it in cinemas from 7 February.
Life is pretty good for Peter right now both professionally and personally.
Not only has he provided the official song to a DreamWorks movie, he's also still working away on 60 Minute Makeover, which is now airing in Australia so his parents can watch.
And in his private life, as we all know, his trainee doctor fiancée Emily MacDonagh gave birth to his second daughter (and their first child together), Amelia, on 7 January. The happy couple announced their engagement shortly after their daughter's birth at Musgrove Park Hospital in Taunton, Somerset.
Baby Andre was nameless for a few weeks until Peter and Emily came to the decision to name her Amelia - although with a little help from Junior and Princess.
"We thought of a name at last, we've finally come up with the name!" said Peter on ITV's Daybreak today. "It's very nice, it ended up being out of Isabella and Amelia and we all sat together [with the kids] and we all decided."
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Watch Peter's music video for 'Kid' below:
Peter and Emily's relationship in pictures: