Kate Read

Catherine ”Kate” Read is the one-year-old baby of Jane Read and David Read and the younger sister of Arthur Read and D.W. Read.

Early life
Kate was first seen as a newborn in "Arthur's Baby" and "D.W.'s Baby".

Season 1
On her first birthday, Kate puts her face in her birthday cake.

Growing Up and Future Life
First revealed in "Paradise Lost", Kate is getting older and becoming less able to talk to Pal and other pets and more able to talk to other anthropomorphic animals. "Mei Lin Takes a Stand" also shows she is able to walk short distances.

During Arthur's dream in "D.W. and the Beastly Birthday", Kate is shown at approximately age 5. She wears D.W.'s hand-me-downs, including her iconic pink jumper. She has fuller, red hair now, in the same style as when she was an infant, with a bow pulled up at the top of her head. D.W. calls her by her new nickname "Katie Bug".

In the book Arthur's Reading Trick, written and illustrated by series creator Marc Brown, she is able recognize several objects by sight and say the words for them, such as "ball" and "diaper."

Physical appearance
Kate is an aardvark like her parents and siblings. She wears a pink shirt, green pajama pants, white disposable diapers, and a bow with a hairclip on her hair. Her swimwear is swim diapers that are about the same color as regular ones, a red bathing shirt, and a white bathing cap with red polka dots. When she was a newborn, she was wearing pink footsie pajamas with green accents. She also has a pacifier in her mouth; but since she became a 1 year old, she has rarely had one. An early Kate can be seen in "Arthur's Baby" and "D.W.'s Baby".

Personality
Kate is able to communicate with Pal, Mei Lin, and other animals, toys, or babies. Anybody who is older than her and can speak English dismisses it as "baby talk" gibberish, and she and the animals interpret grownups' talk likewise. She enjoys playing in her sandbox and shows remarkable intelligence for her age, despite not being able to communicate with people older than herself. But in one episode she couldn't hear Pal correctly at times. Despite being a year old, she rarely stands up. On certain occasions, she is prone to crying. At one point, she threw a tantrum over wanting a balloon, and Pal ran off and brought her back one in order to cheer her up.

Trivia

 * She is modeled after Marc Brown's youngest daughter, Eliza.
 * A running gag is her first word, ranging from "bloog-agwa" to "Brain" or "D.W." This causes many continuity errors within the series unless this is explained by the characters forgetting.
 * She can talk, but only to animals, toys, and other babies (similar to Rugrats). She also talks to the viewers when she's featured in an episode's intro.
 * She can say "D.W." by copying D.W.'s lip movements, but she says "D Double woo".
 * She can also say "Uppy".
 * On her Trading Card, her age is listed as "Cute", even though she is one year old.
 * In material related to the series, she is commonly listed as "Baby Kate."
 * In D.W.'s Baby, D.W. tried to sell her for 50 cents.
 * In "The Secret Life of Dogs and Babies", it revealed that she wants to go to Paris someday.

Appearances
This list is incomplete. Please add to it if you know another appearance.
 * "Arthur's Spelling Trubble" (debut)
 * "D.W. All Wet"
 * "Arthur's Lost Library Book"
 * "Arthur's Pet Business"
 * "D.W. the Copycat"
 * "Arthur Goes to Camp"
 * "Arthur Babysits"
 * "Arthur's Cousin Catastrophe"
 * "Arthur's Birthday"
 * "Arthur's Baby"
 * "D.W.'s Baby"
 * "Arthur's Lost Dog"
 * "So Long, Spanky"
 * "Arthur's Family Vacation"
 * "Grandpa Dave's Old Country Farm"
 * "Arthur and the Crunch Cereal Contest"
 * "Arthur's Chicken Pox"
 * "Sick as a Dog"
 * "Arthur's Almost Boring Day"
 * "The Half-Baked Sale"
 * "Arthur's New Years Eve"
 * "D.W., the Picky Eater"
 * "Go to Your Room, D.W."
 * "Play it Again, D.W."
 * "Arthur's TV-Free Week"
 * "Lost!"
 * "D.W. Goes to Washington"
 * "D.W.'s Deer Friend"
 * "Grandma Thora Appreciation Day"
 * "D.W. Blows the Whistle"
 * "D.W.'s Very Bad Mood"
 * "How the Cookie Crumbles"
 * "D.W., All Fired Up"
 * "Dad's Dessert Dilemma"
 * "Revenge of the Chip"
 * "Mom and Dad Have a Great Big Fight"
 * "D.W.'s Perfect Wish"
 * "The Long, Dull Winter"
 * "Prove It!"
 * "The Blizzard"
 * "The Rat Who Came to Dinner"
 * "That's a Baby Show!"
 * "Nerves of Steal"
 * "You Are Arthur"
 * Arthur's Perfect Christmas
 * "The Secret Life of Dogs and Babies"
 * "Cast Away"
 * "The Great Sock Mystery"
 * "Elwood City Turns 100!"
 * "Pick a Car, Any Car"
 * "Is There a Doctor in the House?"
 * "April 9th"
 * "Postcards from Buster"
 * "Kiss and Tell"
 * "All Worked Up"
 * "Baby Kate and the Imaginary Mystery
 * "Big Brother Binky
 * "Baby Steps"
 * "Opposites Distract"
 * "Dog's Best Friend"
 * "Show Off"
 * "The Tattletale Frog"
 * "Staycation"
 * "D.W. and the Beastly Birthday"