Featured are the epic adventures that take place during the first few months in the lives of Savannah, Siberian and Shorthaired kittens; cats grow up in a house full of guinea pigs, turtles and mice and run off to discover surprising, new territory.

Poodles, Basset Hounds and Bull Terrier puppies are featured.

Three delightful litters of puppies come of age; the first few months of Pugs', Mini-Australian Shepherds' and Rottweilers' lives are full of adventure, including an introduction to an agility course and lessons in duck-herding.

One dozen goldendoodles take over a home and a pet pig's bed; a Westie chases after her wandering twin brother; Swiss mountain puppies find their stride.

A shy Cavalier King Charles Spaniel is coaxed out of her shell by her peppy aunt. Then, everyone wants to be top dog in the Alaskan Malamute home. Finally, three Dalmatians grow into their spots as they show off their skills at the local fire station.

A bear cub befriends a lonely German Shepherd. A deer and a kangaroo have their world turned upside down by a mischievous lemur. And a pygmy goat has a hard time fitting in until he meets a shy puppy.

Star-struck Snow is a Great Pyrenees puppy who dreams of following in her movie star mom's paw prints. A pair of Border Collie pups will need to be brave if they're going to be champion herders. And a Scottish Terrier tries to win over the resident cat.

Six fluffy Coton de Tulear puppies explore their farm home as one of them, Snowflake, struggles to find its place in the world until it meets Pipsqueak, an awkward baby pygmy goat; a mischievous German shepherd puppy struggles in obedience class.

Nanook, a shy Chinook, is the only boy in a litter of four, training to be a sled dog. Rocky, the Labradoodle, and his brother Stanley grow up poolside. And Rollo and Pickles are wiener dogs who aspire to be athletes like their mom, a champion hotdog.

Pit bull puppy Thor discovers an urban paradise where it can be free; Collie pup Little Magic must learn to keep up with its pack mates; Chinese Crested puppies Bella and Buttons, though opposite in appearance, team up against a strange new creature.

The birth and first months of three different litters of puppies are followed; fawning owners do everything they can to accommodate their new pets; adorable moments of puppies' lives are shown as they eat, sleep and play.

Oreo, a tiny tuxedo kitten meets a similarly attired companion: Nellie the Skunk. Sputnik leads his Russian Blue siblings on a grand adventure. And, Ocicat Freckles tries to keep control of her five mini jungle cats.

A foursome of Neo-Mastiffs have big paws to fill if they're going to be be guard dogs like their Mom. A shy Chihuahua puppy learns that her tiny family have big hearts. And a litter of seven English Setters compete for first place.

Irish terriers meet their bothersome teenage brother. 8 Corgis help on the farm, and an Akita puppy finds her place among her brothers.

In this "Best of" episode, viewers get a glimpse of the most adorable inter-species animal friendships. From roly-poly Ragdoll kittens and their German Shepherd playmate, to mini-Australian Shepherds and their quacking duckling pals, it's an extravaganza of cute.

A black-and-white kitten plays with its adopted brother, a baby skunk; an orange tabby kitten tries to befriend a canine housemate; a Savannah kitten seeks a playmate.

Four tiny Tibetan Spaniels - all boys - are born into a family of watchdogs. A extra large litter of Newfoundland puppies take to the water as they train to be rescue dogs. And a patchwork puppy tries to blend into a family of Retriever Mixes.

Kitten owners go to great measures to take care of their fiercely independent pets as the birth and first few months of three separate kitten litters are documented in order to record all of the important moments in the kittens' lives.

Toyger kitten Tonya overcomes her shy nature to befriend a large housemate. British Shorthair kittens audition for the role of "greeter" at a vet's office. And fluffy Ragamuffin Otto keep household chores at bay.

In a litter of six Maine Coon kitties, only boy Maurice struggles to fit in with his sisters. A quiet kitten with a limp tries to find his voice in a litter of super-chatty Siamese cats. And a shy black kitten tries to befriend an older butterscotch tabby.

Three litters of puppies and kittens celebrate their first Christmas.

The epic stories of three litters of kittens are followed as they grow from helpless "furballs" into rambunctious, young cats; hairless Sphynxes redine "cute"; Burmese cats explore new heights; tiny Ragdolls befriend German Shepherds.

Three litters of kittens pounce throughout the first few months of their lives; beautiful American Curl kittens get ready for life on the catwalk; a set of Tonkinese run circles around their mother; a Maine Coon shows his siblings who is boss.

Three litters of puppies go from cute to cuter during the first few months of their lives; a trio of Rhodesian Ridgebacks runs circles around their mom; fluffy Chow Chow puppies have heaps of attitude; a Havanese has her paws full with five puppies.

The coming-of-age stories of three litters are featured: three sweet puppies keep their Jack Russell Terrier mother active; a Portuguese Water Dog finds out that her litter may not be too fond of water; a Bullmastiff mother's four puppies keep growing.