The Oscar-winning creator of Wallace and Gromit has warned that the duo may have had their last adventure.
Nick Park said he was unsure whether he would carry on the British comedy without veteran actor Peter Sallis - who voices Wallace.
The creator of the plasticine pair said Sallis, 93, was "not too well" and despite having an understudy in actor Ben Whitehead, questions remained over whether the series would continue.
Sallis suffers from the eye condition macular degeneration and has not voiced the Wensleydale-loving character in four years.
Park, speaking at the 25th anniversary of Leith School of Art, said it was a "big question" whether they would continue making Wallace and Gromit, according to The Scotsman.
He added that he "would love to do more Wallace and Gromits in the future" and that he "could make more films with them till the cows come home".
It was also revealed that Sallis originally agreed to take the job of voicing Wallace despite being offered just £25.
The Last of the Summer Wine star was first approached by Park in 1982 and has voiced Wallace since 1990.
Park said Wallace did not have a wide mouth until Sallis first said "cheese".