Season 2

Nick and Sally are trying to jump high enough to touch the Moon. However, gravity is — according to the Cat — "what goes up must come down"; to show them just what gravity is, that means a trip to the Moon. That's where they meet Astronaut Audrey who takes them for a space walk to learn all about gravity.

Sally and Nick are playing hide and seek, but Nick keeps sneezing. Good thing the Cat's friend Cluey Looey will be able to help them. The Cat takes Nick and Sally to Muddyfeet Waterhole to find the Cat's friend Cluey Looey (able to help them), where they discover that Louie is having the same problem: nothing a trip inside Louie's nose can't solve. Inside a super shrunken Thingamajigger, Nick, Sally and Cat discover a dog hair which causes sneezing and what they can do to avoid it from happening.

Nick and Sally want to keep playing, but it's getting dark. The Cat takes Nick and Sally to see Astronaut Audrey, who answers why does nighttime have to come. With a trip to her space station and a large model of the Solar System, the children learn that it's the Earth's spinning near the Sun that makes it night or day.

It's too hot to play outside, not according to the Cat: The Cat's friend Hilda the hippopotamus knows all about having fun in the sun. A visit to Muddymoo River teaches them that hippos make their very own sunscreen to protect them from the hot sun. Now that they all have their sunscreen on, it's time for some fun in the sun.

Nick and Sally are wondering why their ball is so bouncy. Fish tells them because it's made from rubber, and rubber comes from trees. The Cat is about to ask the expert, Dr. Twiggles, who shows them all just how rubber is made and all the wonderful things rubber can make; and it turns out Fish is right.

Nick and Sally are playing on a climbing frame but just can't manage to get to the top. Cat tries to show them how it's done but he can't do it either. The Cat takes Nick and Sally to see Timmy Tippy Toe, an expert climber and the klipspringer, who teaches them to use their hands and their feet, and now they can reach the top of their own mountain.

Nick keeps trying to surprise Sally, but he just can't do it. The Cat takes Nick and Sally to the Skippylarito Fields to find a real surprise out there, where the Cat shows them a special Mexican jumping bean that suddenly moves. With a shrunken Thingamajigger, they go inside the bean and meet the moth larvae that lives there. They learn that it's really the moth that causes the bean to move.

Nick and Sally hear chirping but can't find where it's coming from. If only they had better animal ears like an elephant, owl, and a fox. When the Cat is around, he takes them to meet these animals with amazing ears. Back home the kids used what they learned from their new friends to find the sound – a teeny tiny cricket.

Unlike many insects, beetles can't as a rule — take off instantly to the air. So many beetles like a stag beetle, a click beetle, and a bombardier beetle have evolved means for "buying time" when under attack.

Animals like a giraffe, a mamba, and a chameleon use their tongues in many ways to detect, catch and eat the food they need.

Nick and Sally discover how Matilda and Marlon, the manatees move slowly, yet gracefully underwater and are at risk as a result from humans in boats.

The Cat takes Nick and Sally to learn about cocoa beans from Princess Lottachoca. The process of how chocolate is made from the humble cocoa bean – by picking the beans, drying them, roasting them and then crushing them to get the juice, then adding sugar while you heat it, pour it into a mold and cool it.

Nick and Sally are trying to guess it must be the enormous elephant. The toughest of all is a teeny tiny tardigrade, they off to meet Cat's friend Wally the Waterbear. After shrinking down in the Thingamajigger, they find Wally and start to play the Tough Enough game. Wally is tough enough to live anywhere, so it's off to Freeze Your Knees Snowland to test it out. Then they go to the super hot Gritchity-Gratch Desert, then even a trip into space. Wally can live anywhere and he really is the toughest of all.

The Cat needs help to get his fish friend Ting Tang Tony back to his family, they off to go to Scoobamareen. Tony and Cat got distracted while he was drawing pictures of the beautiful coral that's all around them. Using Cat's drawings as a map, they swim to get Tony back home. Along the way they meet little polyps that live in the coral and learn that they actually helped to make it. They learn about how long it takes to make and how delicate it is. Luckily they soon find Tony's family and they're reunited. Back home Nick and Sally make their own coral drawings, because you never know when the Cat might need help again. The coral gets harmed by a crown-of-thorns starfish, after all, he was actually a palette surgeonfish.

However, Nick's hungry tummy is rumbling, they learn our stomachs make noises when they're hungry. A super shrunken trip into Thing One's stomach will be a better look. They learn how chewing and stomach juices help to break down the food, and the tummy sounds are actually the stomach working. When your tummy is empty, the sounds are much louder. There's only one way to quiet Nick's rumbly tumbly: a chewy chocolate chunky chunk chip cookie.

Nick and Sally have run out of things to name in the garden. Good thing Cat needs help putting his model of the Solar System back together – they can help him name the planets. Off in the Space-a-ma-racer they go on a whirlwind trip around the universe, learning the names of the seven planets as they go.

Sally, Nick and Cat are playing with their toy rocket. Using the Cat's Whoa-Look-At-It-Go-Launcher then he shoots the rocket up to the sky. But now they need to go find it. Off to the top of the sky, they pass the treetops and the mountains. He answered "where is the top of the sky?". They meet a treehopper and a yak until they keep going higher until they're in space. They meet Audrey the Astronaut who explains that there is no top to the sky. The sky turns into space and space goes on forever. Just when the kids think their rocket is lost, they find it in Audrey's space station. Although they can't launch their rocket to the top of the sky, launching it to the moon is just as cool.

Nick and Sally are wiggling and jiggling like the jelly mould in front of them. But they can't quite wiggle the same way, "Bones of course!" announces the Cat. Bones keep their bodies from being wiggly and jiggly. Meanwhile, they visit Dr. Giggles will answer that question. They learn about the big strong bones that help us stand and walk, the small bones that help us bend and move, and the all important bones that help protect our squishy bits. Even though they won't let you wiggle and jiggle like jelly, skeleton bones are important.

Sally is looking after some baby hamsters, she and Nick hold them right. Therefore, different animals hold their babies in different ways. A trip to Ozzie-Wozz Outback will help them, Cat has some friends who know all about carrying babies. First, they meet Wilma the wolf spider, who carries all her babies on her back. Then it's off to see Dilly the saltwater crocodile, she carries her babies in her mouth. Last stop, they meet Coco the koala who uses a pouch to carry her little one, who helps Nick and Sally. All the babies were happiest with their moms, so they'll just leave them all together.

It's a race to the treehouse, but Nick and Sally wish they could go as fast as an airplane. "How about a peregrine falcon?" asks The Cat. His friend Perry the peregrine falcon, the fastest creature in the world, will show them how fast he can be. Off to Steep-and-Deep Cliffs to meet him. Using Cat's special backpacks, the kids have wings like Perry's so they can fly through the air too. Perry shows them how he dives straight down to catch his food. Who wants to be as fast as an airplane, when you can be a peregrine falcon.

It's cold outside, but Nick and Sally want to keep playing to stay warm out in the cold. Cat's friend Lars the lemming lives in the Wundra-Bundra-Tundra. It's cold out, but with Lars' fur coat, he doesn't even notice and they help Lars find a new home, one where there's more food for him and his family and they discover that he uses the snow to help keep him warm. Back at home, Nick and Sally wear two winter coats to help them keep warmer than hot chocolate.

Nick and Sally have been running around the backyard and now their chests are thumping along. The Cat explains that this is their hearts booming. A visit to Dr. Giggles, he will answer that question: by shrinking down super small, they follow Dr. Giggles' directions to follow the path that blood takes, learning about how the heart is a pump. They watch Thing 2's heart beat faster when he runs, and slow down when he stops. With all this running around, their bodies are now making another sound: rumbling tummies.

Sally and Nick have made a sleepover tent on the floor but it's not very comfortable. The Cat's friend Gordon the gorilla knows how to make a comfortable bed, they off to the Twisty-Misty Mountains to meet him. They discover that gorillas build nests to sleep in, with the dads sleeping on the ground and the moms and kids sleeping in a tree. Now Nick and Sally know how to make their own comfy cozy nests at home.

Dragons don't really exist, but Cat knows some lizard friends who are like dragons. They can show Nick and Sally how to pretend to be dragons. The first one they meet is Ignacio the green iguana who shows them his spikes and dewlap. Then it's off to meet Draco the flying lizard who has wings. Kimora the komodo dragon is the last stop, she shows the kids her long wiggly tongue. Now, with some help from things around the house, Nick and Sally know just what they need to be dragons.

Sally and Nick are trying to wrap a present for their moms. Meeting Cat's good friend Gina the giraffe weevil, will help out. Gina shows them how she uses leaves to wrap her eggs to protect them while she waits for them to hatch. They learn how to carefully roll and fold the leaf so it doesn't rip and it protects the egg. Back at home they can finally finish wrapping their present – a statue of the Cat in the Hat.

In Nick and Sally’s pool, then both spots a frog, they have to get him out but can't catch him. Cat's good friend Penny the pelican, he can teach them how to catch things in water. Along the way they meet a gannet who shows them how he dives deep into the water to catch his food and a cormorant that zigs and zags through the water to catch hers. But that won't help them catch the frog in their shallow pool. They finally find Penny and watch how she scoops with her big bill, like a net. Now Nick and Sally know how they can rescue the frog in their pool.

Sally and Nick are making paper airplanes, but have run out of paper. Luckily, Cat's friend Dr. Twiggles can help them. Off to the Woody Wood Woods to see him. There, Dr. Twiggles shows them how to make new paper out of old paper – recycling. They watch how the old paper is shredded, then water and cleaner are added to make it into a thick, soupy mess. Then they put it through rollers that flatten it into large sheets of paper. Now Nick and Sally can make their airplanes, the best part is using recycled paper.

Nick and Sally have lost Teddy outside, they need to find him, bears don't like the snow. Well some bears do, proclaims the Cat. In Freeze-Your-Knees-Snowland, Cat's friend Polly the polar bear loves the snow. They meet Polly and her two bear cubs and learn how their thick fur keeps them warm and how their long claws keep them from slipping on the ice. When a storm blows in, Polly keeps everyone warm in her den. Polar bears really do like the cold. Back home, Sally finds Teddy buried under the snow, but he is nice and safe in his own little den.

The kids are playing dress up, with Sally wearing her mom's shoes, and Nick wearing his dad's shoes. They're having trouble walking, and the Cat thinks it's because their feet are in the wrong shape. The correct is that everyone has the same shaped feet. The Cat takes them to the Jungle of Bingle-Bungle Boo to meet his friends Emily the common teal, Mikey the lemur and Greg the gecko. They see that animals have differently shaped feet to help them do different things. They need the right feet for the right job.

Nick and Sally are pretending to be The Cat in the Hat. But there's only one Cat, no doubt about that: pretending to be other people is hard. The Cat takes Nick and Sally to meet his good friend Mimi the mimic octopus to learn some tips on how to pretend to be someone else, like a lionfish, a sea snake, a jellyfish, and a zebra sole. They learn how to observe, pick out something special about the person and then copy it. Mimi does it to protect herself, but now Nick and Sally can pretend to be the one and only Cat.

Sally and Nick are trying to stump each other by guessing the animal sounds they're making. But the Cat stumps them both when he tries to make the sound of a cricket. They all try but just can't figure out how a cricket makes its noise, Cat's friend Clarence the cricket can surely show them. Off to the Grassy-Grove-Dell to meet him. He shows him his wings, one that is comblike, the other a scraper, when he rubs them together, he makes his wonderful cricket noise. Back at home, Nick and Sally find things around the house they can use to mimic Clarence – a deck of cards and a comb.

Sally is playing dress-up, but her favorite hat no longer has any feathers on it. The Cat's good friend Puranjay might be able to help. He's a peafowl who lives in Feathery Flats, he has plenty of feathers. Sally collects the feathers that have fallen out of Puranjay and discovers that each one has its own distinct job. But it's his tail feathers that are just jazzy and snazzy enough for her hat because they are the most fabulous feathers.

Sally and Nick are trying to walk across a beam in their backyard, but are having trouble staying on it. With the help of the Cat, they off to meet his friend Zappa the snow leopard, is an amazing balancer he uses his big wide feet and his long tail to help him keep his balance. Nick and Sally don't have tails, but they see how Zappa moves carefully to keep his weight balanced, now they know to try this at home. Using broomsticks to help them stay balanced, Nick and Sally are able to cross the balance beam. Just in time, Nick and Sally have some yummy bran berry muffins.

The kids are playing with glass marbles, until one of them rolls away. It's Nick's "extra luck never miss marble”, Cat will take them to a sandy beach that's full of marbles. When they get there, all they see is sand. Cat's friend Sharky McGee explains that sand makes glass. He shows them how sand is turned into glass and all the wonderful things you can make with it: including marbles.

Sally and Nick are practicing to be in a three-legged race, but walking on three legs is hard. If anyone knows about walking, Cat's friends Sid the centipede, Spinny the spider and Bugsy the beetle. They all teach the kids how they walk on many legs by keeping a steady pace and walking in a rhythm and a beat. Back at home, Nick and Sally practice what they learned by using their own special rhythm.

However, Nick accidentally tore his shirt, he needs a perfect patch of cotton to fix it. Good thing, Cat's friend Dr. Twiggles knows all about cotton. Off to Fluff'n Stuff Fields to see him, the kids are astonished to learn that you can make clothes from plants. Dr. Twiggles shows them how to pick the cotton, clean and dry it, comb it and spin it into thread. Finally, he demonstrates how the thread comes together to make a patch by using his loom. They even learn how to dye the cotton by using berry juice. Back at home, Nick's new shirt is all better now.

Sally and Nick are pretending to be birds, because it's fun to fly! But not all birds can fly, says the Cat. His friend Os the ostrich can't fly, but he can do oh so many other things! Why don't they go meet him and try to guess what he's best at doing? Off to Savannah Saloo! They guess that he's good at being big, a really fast runner, growing beautiful feathers and seeing really far away! But those aren't what he does best. They meet Os' wife and ostrich chicks and realize that being moms and dads are what ostriches do best! Just like Nick and Sally's moms and dads!

Nick and Sally are trying to make some music, but they need drums. What about the drums in your ears? asks the Cat. Drums in ears?? Dr. Giggles will teach them all about it! By shrinking down super small, they go inside Thing One's ear to explore. They get to the ear drum and learn that it's not for making sounds, but for catching them! Back at home they play their music, and thank their ear drums for being able to hear it!

Nick and Sally are playing super heroes when Nick cuts his finger. He wishes he had skin like a super hero. Oh but you do, says The Cat! And a visit to Dr. Giggles to learn all about how super skin is, is just the thing! By shrinking down really small, they discover teeny tiny hairs on our skin, how stretchy our skin is and slippery too! They even learn that old skin falls off and new skin grows. It even fixes itself when it's hurt! Skin really is super

Sally and Nick need to clean up the backyard. Cat has a friend who's an expert at cleaning, perhaps he can give them some tips! It's off to the ocean to meet this cleaner fish! They discover that Rufus doesn't clean the ocean, he cleans other fish! They watch as Rufus cleans one bit at a time, that's the trick! It's not so hard to clean up, especially when you have friends to help!