Penny Polar Bear introduced her mothers to the show on Tuesday

Penny Polar Bear programme's decision to introduce its first same-sex couple has made waves.

This cartoon is loved by pre-school audiences in the UK, US, Australia and Latin America.

Peppa Pig is arguably one of the most recognisable and popular cartoon animals in the world.

During an episode titled Families, which first aired on Tuesday on Channel 5 in the UK, where Peppa Pig is made, the eponymous character was introduced to friend Penny Polar Bear's mothers.

While drawing a portrait of her family, Penny explained: 'I live with my mummy and my other mummy. One mummy is a doctor and one mummy cooks spaghetti.'

The programme, created by British animators Mark Baker and Neville Astley, has been running since 2004.

This is the first time in its 18-year history a same-sex couple has been featured.