The Humansons are just your average, everyday family...

Yes, they clean their car with yoghurt.

Yes, they've trained their pet slug to belly dance.

Yes, Harriet Humanson invented the 'Toffee Tie'.

And yes, they're looking for a new pet... at the zoo! A killer whale perhaps?

But that's nothing out of the ordinary, right?

Annual Pet Day is coming up, but Horace is sick! Can the Humansons train a new pet in time? And what's happened to guest judge — animal-loving TV star, Woof Barkwel? Will one of Harriet's inventions save the day?