The 2011 Bathurst winner donated the placement on his helmet as part of a new relationship with Guide Dogs.
The helmet features paw prints of coloured non-toxic paint from Guide Dog puppy Suzette, 18-month old Guide Dog-in-training Nelson, as well as Percat's own pet four-year-old Labrador, also named Nelson.
"I wanted to help raise funding for Guide Dogs for some new puppies.
"And because I love my Nelson, and I'm a bit dog-obsessed, it all tied in really well.
"I'm really proud of how it all came together."
Guide Dogs Victoria CEO, Karen Hayes, was "delighted" the BJR ace reached out with his creative idea.
"We know that Nick adores his own chocolate Labrador, Nelson, but to extend that love and support to the work we do at Guide Dogs is just incredible," Hayes said.
"Not only is Nick giving Guide Dogs an incredible platform to be seen in front of a new Supercar audience, but the proceeds from the auction will help fund the next generation of Guide Dogs that provide freedom and independence to people living with low vision or blindness."
The new partnership isn't Guide Dogs Victoria's first foray into motorsport, with the organisation being the charity partner for the Formula 1 Australian Grand Prix in 2017 and 2018.
Percat will commence his 2021 Repco Supercars Championship campaign at this weekend's Repco Mt Panorama 500.
Video description: Video begins with Nick Percat speaking to the camera, followed by shots of Nick with Suzette (black eight week old Labrador puppy) and Nelson (yellow Labrador dog) making their mark on the helmet using non-toxic paint. Video concludes with Nick speaking to the camera holding the custom-designed Guide Dogs helmet.