This article is rated G, meaning all ages admitted.
The Land Before Time XVII: The Return of the Yellow Bellies is an upcoming official direct-to-video animated family adventure feature film and will be the seventeenth film in The Land Before Time series. The film will be directed by Davis Doi and Charles Grosvenor. The plot centers on The Gang of 21 who are excited to meet yellow-bellied Beipiaosaurus, Loofah, Doofah and Foobie again. A subplot involves Guido finally meeting his parents. Like all other Land Before Time movies, it is traditionally-animated.
When Chomper and his pals welcome Ruby's family to the Great valley, things will be calm. LAter on, Chomper must keep the Great Valley safe with help of his parents to keep the peaceful valley safe.
- Littlefoot - A brown male young Apatosaurus.
- Cera - A orange female young Triceratops.
- Ducky - A green female young Saurolophus.
- Petrie - A brown male young Pteranodon.
- Spike - A green male young Stegosaurus.
- Chomper - A purple male friendly young Tyrannosaurus.
- Ruby - A pink female young Oviraptor.
- Tippy - A pinkish-orange young Stegosaurus who is Spike's playful friend.
- Ali - A purple female young Apatosaurus who is Littlefoot's friend.
- Rhett - A brown male young Apatosaurus who is Littlefoot's and Ali's friend.
- Shorty - A green male young Brachiosaurus who is Littlefoot's brother.
- Skitter - A green male young Tinysauruses and he is Lizzie's brother, Big Daddy's son and Littlefoot's friend.
- Lizzie - A yellow female young Tinysauruses and she is Skitter's sister, Big Daddy's daughter and Cera's best friend.
- Rocky - One of the twin young Tinysauruses.
- Dusty - Another one of the twin young Tinysauruses.
- Big Daddy - He is the leader of the Tinysauruses.
- Guido - A teal male young Microraptor.
- Hyp - A gray male teenage Hypsilophodon.
- Mutt - A green male teenage Muttaburrasaurus.
- Nod - A teal blue male teenage Nodosaurus.
- Wild Arms - A male Nothronychus who is eccentric member of Bron's herd.
- Loofah - A blue male Beipiaosaurus who is a the cheerful leader of a herd of Yellow-Bellies.
- Doofah - A pink female Beipiaosaurus who is a prominent female in Loofah's herd.
- Foobie - A green male Beipiaosaurus who is the "Wise One" of Loofah's herd.
- Mama Glider - A teal female Microraptor who is Guido's mother.
- Papa Glider - A teal male Microraptor who is Guido's father.
- Bron - A brown male Apatosaurus who is Littlefoot's and Shorty's father.
- Littlefoot's stepmother - A female Apatosaurus who is Bron's, new mate/wife and Littlefoot's stepmother.
- Etta - A yellow female Pteranodon who befriends Littlefoot and his friends.
- Grandpa Longneck - A male Apatosaurus who is Littlefoot's grandpa.
- Grandma Longneck - A female Apatosaurus who is Littlefoot's grandma.
- Topsy - A dark gray male Triceratops who is Tria's husband and Cera's and Tricia's father.
- Tria - A dark pink female Triceratops who is Topsy's wife and Cera's and Tricia's mother.
- Tricia - A pink female baby Triceratops who is Cera's baby sister and Topsy's and Tria's baby daughter.
- Ducky & Spike's Mother - A greenish brown female Saurolophus.
- Petrie's Mother - A light-blue female Pteranodon
- Iain Armitage as Littlefoot
- Anndi McAfee as Cera
- Aria Curzon as Ducky
- Jeff Glen Bennett as Petrie / Mutt
- Rob Paulsen as Spike / Guido / Papa Glider
- Jackson Robert Scott as Chomper
- Meghan Strange as Ruby
- Nika Futterman as Ali / Rocky / Mama Glider
- E.G. Daily as Rhett / Shorty
- Leigh Kelly as Skitter
- Cree Summer as Lizzie / Tippy
- Ashley Rose Orr as Dusty
- Sam Elliot as Big Daddy
- Michael Kelley as Hyp
- Scott Menville as Nod
- Cuba Gooding Jr. as Loofah
- Sandra Oh as Doofah
- Pete Sepenuk as Foobie
- Reba McEntire as Etta
- Damon Wayans Jr. as Wild Arms
- Scott Whyte as Bron
- Jim Cummings as Grandpa Longneck
- Miriam Flynn as Grandma Longneck
- Richard McGonagle as Topsy
- Jessica Gee as Tria
- Mia Talerico as Tricia
- Tress MacNeille as Mama Swimmer / Mama Flyer
- Frank Welker as Sharpteeth
- Patrick Stewart as the Narrator
- Yellow Belly Bounce by everyone
- Me & My Parents sung by Guido
- Fix Everything sung by the Gang of 21
- This will be the second film where the Gang of 21 doesn't leave the Great Valley.
- This will be the second Land Before Time movie to use the Wilhelm Scream sound effect. The first was The Land Before Time: Journey to Sharptooth Mountain.
- This is the first film in which Ruby cries, until Chomper cheers her up.
- This is the second film in which Guido cries; there are tears visible in his eyes during the scene where he was talking to his family.
- after Chomper's parents chase the enemies out with roaring, the Great Valley citizens cheer