Emily Elizabeth owns a big, red dog named Clifford. In fact, Clifford is a humongous dog, about as big as the house where Emily Elizabeth lives with her parents. Clifford lives in a doghouse behind their house that’s a little larger than the house itself.
Clifford’s extra large size is the basis of the stories. Emily Elizabeth can do things with her dog that people can’t do with normal-sized dogs, like riding him into the city for a visit. Sometimes, Clifford can rescue people from danger in ways that other dogs can’t. However, Clifford’s size can also cause problems because when he fetches things, he often brings back more than people expect, he can crush things when he rolls over, and when he chases cars, he can actually catch them.
The Clifford books are by Norman Bridwell. The picture book series has been very popular for decades, and Clifford is now the official mascot of the publishing company Scholastic. There have been tv series based on the books.

Books in the Series:

Clifford, the Big Red Dog (1963)
Emily Elizabeth introduces her gigantic dog, Clifford.
Clifford Gets a Job (1965)
Clifford Takes a Trip (1966)
Clifford is too big to travel easily with his family, but he follows them on a camping trip.
Clifford’s Halloween (1966)
Clifford and Emily Elizabeth celebrate Halloween and try to decide what costume Clifford should wear.

Clifford’s Tricks (1969)
When a new girl moves to the neighborhood and tries a dangerous stunt to show off, Clifford saves the day!
Clifford, the Small Red Puppy (1972)
This story explains how Clifford started as a very small puppy and grew to be the gigantic dog he became.
Clifford’s Riddles (1974)
Clifford’s Good Deeds (1975)
Clifford at the Circus (1977)

Clifford Goes to Hollywood (1980)
Also published under the title Clifford is a Star. Clifford gets an opportunity to star in a movie and goes to Hollywood.
Clifford’s ABC (1983)

Clifford’s Christmas (1984)
Clifford and Emily Elizabeth celebrate Christmas and meet Santa Claus.
Clifford’s Family (1984)
Clifford and Emily Elizabeth visit Clifford’s parents and siblings.

Clifford’s Kitten (1984)
Clifford and the Grouchy Neighbors (1985)
Clifford’s Pals (1985)
Also published under the title Clifford’s Best Pals.
Clifford’s Manners (1987)
Count on Clifford (1987)
Clifford’s Birthday Party (1988)
Clifford’s Puppy Days (1989)
Where is Clifford? (1989)
Clifford’s Happy Days (1990)
A pop-up book.
Clifford’s Word Book (1990)
Clifford, We Love You (1991)
Clifford’s Animal Sounds (1991)
Clifford’s Bathtime (1991)
Clifford’s Bedtime (1991)
Clifford’s Peekaboo (1991)
Clifford Counts Bubbles (1992)
Clifford Follows His Nose (1992)
Clifford’s Happy Easter (1992)
Clifford’s Noisy Day (1992)
Clifford’s Thanksgiving Visit (1993)
Clifford, I Love You (1994)
A pop-up book.
Clifford the Firehouse Dog (1994)
Clifford’s First Christmas (1994)
Clifford and the Big Storm (1995)
Clifford’s First Easter (1995)
Clifford’s First Halloween (1995)
Clifford’s Sports Day (1996)
Clifford’s First Autumn (1997)
Clifford’s Spring Clean-up (1997)
Clifford’s First Valentine’s Day (1997)
Clifford’s Peek-and-Seek Animal Rides (1997)
Clifford and the Big Parade (1998)
Clifford Keeps Cool (1998)
Clifford Counts 1-2-3 (1998)
Clifford Makes a Friend (1998)
Clifford: Where is the Big, Red Doggie? (1998)
Clifford’s First Snow Day (1998)
Oops, Clifford! (1998)
Clifford and the Halloween Parade (1999)
Clifford Grows Up (1999)
Clifford’s Best Friend: A Story about Emily Elizabeth (1999)
Clifford’s Big Book of Things to Know (1999)
Clifford’s First School Day (1999)
Clifford Barks! (2000)
Clifford To the Rescue (2000)
Clifford Visits the Hospital (2000)
Clifford’s Opposites (2000)
Clifford’s Schoolhouse (2000)
Clifford’s Big Red Reader (2001)
Clifford’s Furry Friends (2001)
Clifford’s Happy Mother’s Day (2001)
Clifford’s Puppy Fun (2001)
This is a lift-the-flap book with stickers.
Clifford’s Valentines (2001)
Clifford Runs to Story Time (2001)
Clifford’s Busy Week (2002)
Clifford Goes to Dog School (2002)
Clifford’s Neighborhood (2002)
Clifford Loves Me! (2003)
Clifford’s Class Trip (2003)
Clifford’s Day with Dad (2003)
Clifford’s First Sleepover (2004)
Clifford Goes to Washington (2005)
Clifford’s Puppy Days: Christmas Angel (2005)
Clifford the Champion (2009)
Clifford Makes the Team (2011)
Clifford Goes to Kindergarten (2015)
Clifford Celebrates Hanukkah (2015)