In animation, a kitten named Kit and a puppy named Pup come out from behind a star.

Kit says MEOW!

Pup says WOOF!

Star-shaped screens show images of real children doing different activities.

A song plays INVESTIGATE WITH KIT AND PUP
DISCOVERING WITH KIT AND PUP
LET'S FIND OUT ABOUT THE WORLD
WITH KIT AND PUP

The name of the show reads "Kit and Pup."

(MEOWING)
(BARKING)

At the beach, Kit plays with a ball as Pup drags a heavy cooler.

A kid's voice says HI, KIT.

Kit says MEOW.

The kid says HI, PUP!

Pup says RUFF.

The kid says HEAVY.
(STRAINING)
LIGHT.
HEAVY...

Pup says OOF.

The kid says --AND LIGHT.

A girl picks up a box full of toys.

The kid says HEAVY.

Another girl picks up an empty box.

The kid says LIGHT.
WHO'S GOING FIRST?
WHO WILL IT BE?
HOW MANY HEAVY THINGS CAN PUP
SEE?

Pup says RUFF!

The kid says IS THIS SHOPPING BAG
HEAVY?

Pup struggles to pick up te shopping bag.

(STRAINING)

The kid says YES.
IS THIS TOY BOX HEAVY?
(STRAINING)

The kid says YES!
IS THIS ANCHOR HEAVY?
(STRAINING)

The kid says YES.
HOW MANY HEAVY THINGS DID PUP
SEE?
ONE, TWO, THREE.
WHOOPEE!

Pup says RUFF!

(KIDS CHEERING)

The kid says WHO'S GOING NEXT?
WHO WILL IT BE?
HOW MANY LIGHT THINGS CAN KIT
SEE?

Kit says MEOW.

The kid says ARE THE FEATHERS LIGHT?
YES.
ARE THE KITES LIGHT?
YES.
IS THE LOG LIGHT?
(STRAINING)

The kid says NO!
THE LOG IS HEAVY!
HOW MANY LIGHT THINGS DID KIT
SEE?
ONE, TWO.
WOOHOO!

Kit says MEOW!
(KIDS CHEERING)

The kid says HEAVY ELEPHANT.
LIGHT SNOWFLAKE!

Pup drags the cooler.

The kid says HEAVY...

Kit kicks the beach ball.

The kid says AND LIGHT!
(GRUNTING)
LET'S INVESTIGATE!
(CHEERING)
ARE BIG THINGS ALWAYS HEAVIER
THAN SMALL THINGS?
LET'S FIND OUT.

Kids put a teddy bear on one end of a see-saw and a rubber duck on the other.

The kid says THE TEDDY IS BIGGER THAN THE
DUCK.
AND IT'S HEAVIER!
(CHEERING)

The kid says NEXT, LET'S WEIGH THE TEDDY AND
THE SMALL CAR.
WHICH DO YOU THINK IS THE
HEAVIEST?
THE SMALL CAR IS THE HEAVIEST.
(KIDS CHEERING)

The kid says NOW, LET'S WEIGH THE TEDDY
AND A BIG BEACH BALL.
WHICH DO YOU THINK WILL BE THE
HEAVIEST THIS TIME?
THE TEDDY!
THE BEACH BALL WAS BIGGER,
BUT THE TEDDY WAS HEAVIER.
SO, BIG THINGS AREN'T ALWAYS
HEAVIER THAN SMALL THINGS.
WHY DO YOU THINK THAT IS?

A song goes WHICH OPPOSITES DO YOU KNOW
ARE YOU READY TO HAVE A GO?
FAST AND SLOW
STOP AND GO
WHICH OTHER ONE DO WE KNOW?
WHAT'S THE OPPOSITE OF HEAVY?
IT'S LIGHT!
AND WHAT'S THE OPPOSITE
OF LIGHT?
IT'S HEAVY!
YEAH!
(GRUNTING)

Pup says RUFF!

Kit says MEOW.
(WIND WHOOSHING)
The wind blows the beach ball away.

The kid says LIGHT.

Kit says MEOW!
(WIND WHOOSHING)

The wind makes the cooler moves ever so slightly.

The kid says HEAVY!

Pup says RUFF!

Pup and Kit get popsicles out of the cooler.

The kid says BYE, KIT.
BYE, PUP!

A song goes INVESTIGATE WITH KIT AND PUP
DISCOVERING WITH KIT AND PUP
LET'S FIND OUT ABOUT THE WORLD
WITH KIT AND PUP

The end credits roll as the theme song plays.

The song goes INVESTIGATE WITH KIT AND PUP
DISCOVERING WITH KIT AND PUP
LET'S FIND OUT ABOUT THE WORLD
WITH KIT AND PUP

Copyright 2018, BBC.