Classic characters Roobarb and Custard will be acting as the new brand ambassadors for animal charity, the PDSA.
The characters have already appeared on a range of PDSA 'I Love Dogs' and 'I Love Cats' t-shirts from Poetic Gem, which launched with the support of Alesha Dixon.
The charity is now hoping that Roobarb and Custard will help raise £1 million through a range of activities across retail and online, as well as a text campaign which will see mobile users receive a free Roobarb and Custard screensaver is return for donations.
Images of the duo are also set to appear on the charity's fleet of vehicles.
"We are delighted that the PDSA has chosen Roobarb and Custard to act as its brand ambassadors," said Rob Corney, MD of Bulldog Licensing. "As Britain's most famous cat and dog duo they are a perfect fit and the brand's huge cross-generational appeal means that the new campaign will strike a chord with everyone."