Coles Supermarkets will donate 5 cents from every dog food product purchased to Guide Dogs Australia in a national fundraiser for the the charity.

The campaign, which will run until Tuesday 21 May, includes all purchases of pet food made in-store and online, but excludes pet accessories and treatments, with a maximum donation cap set at $300,000.

The funds raised will be used to support the breeding, raising, and training of Guide Dogs across Australia. Coles customers can also contribute to Guide Dogs by 'feeding' a Donation Dog with loose change at a Coles supermarket or selected Liquorland and First Choice Liquor Market stores year-round.

"Coles is always looking at ways to make the shopping experience - both instore or online - for our customers more accessible and inclusive and we are proud of our long running partnership with Guide Dogs to improve access for Australians living with low vision or blindness," said Coles Group Head of Culture & Inclusion, Katie Wyatt.

Coles has a history of supporting Guide Dogs, having raised more than $14 million over 40 years through initiatives such as the Donation Dogs.

"Before receiving my Guide Dog, my independence was limited, and I felt extremely restricted and isolated. My world was getting darker and really felt like it was shrinking. Even leaving my house independently was a challenge and filled me with fear and anxiety," said Karlee, a Guide Dog recipient.

"When I got my first Guide Dog Olympia, I experienced freedom for the first time. Olympia has since retired and last July I was matched up with Isla who allows me to leave my house with confidence and truly has opened up my world so much. The bond I share with Isla is so special and like no other. We trust each other immensely and have a deep level of communication, which allows us to work together as a team. Isla has given me the gift of independence, freedom and constant companionship which I am forever grateful for."

"Creating a world that is accessible and inclusive for people with low vision or blindness is only possible with support from organisations like Coles," said Dr Russell Harrison, Guide Dogs GM Dog and Vision Services. "This campaign will help continue to fund the breeding, raising and training of Guide Dogs as well as a multitude of other essential services. Our thanks go to the team at Coles and their customers whose generous support is changing lives."