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Fast Biters (Invasion of the Tinysauruses)
Fast Biters (Invasion of the Tinysauruses)
XI Velociraptor.png

Male (purple)[1] Unknown (blue) possibly Female




Blue w/ dark blue stripes
Dull purple w/ dark purple stripes

Eye color






Voice actor

Frank Welker[Citation Needed]
John Ingle (laughing, uncredited)
Stock jaguar, elephant, crocodile, and walrus sounds

First appearance

The Land Before Time XI: Invasion of the Tinysauruses

Last appearance

The Land Before Time XI: Invasion of the Tinysauruses

These two Fast Biters (Deinonychus) appear during the climax of The Land Before Time XI: Invasion of the Tinysauruses as threats to the kids in the climax of the film. They are Fast Biters, a term used by the characters for dromaeosaurs, popularly known as raptors. One is blue and the other is purple in color. They both have red eyes and black stripes down their backs. They live in the Mysterious Beyond, perhaps in an area around the Great Valley.


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They first appear when the Tinysaurus herd step out of a cave into the desolate areas of the Mysterious Beyond. Shortly afterwards, the raptors attack the group, chasing them into the cave. The pair get stuck, and the Tinysaurs hide. The pair free themselves but did not notice the Tinysaurs hiding nearby. They continue to move in the same direction.

Soon, the Fast Biters head to the Great Valley by getting through a hole in a large pile of rocks that were put there to drive the Tinysauruses out from the Valley. The Deinonychus then scurry into the brush. Littlefoot's friends, mistaking the rustling of the foliage for their friend, head towards the bushes, only for the two predators to jump out.

A chase ensues, with Cera only surviving thanks to Tria, who headbutts the attacking blue sharptooth aside and aids the children in their spat against the predators. Littlefoot also helps out Ducky by pulling back a tree branch and letting go, knocking over the purple sharptooth that was chasing her, but it quickly recovers and chases both of them. Later, Spike and Petrie are nearly eaten by the blue sharptooth, before Lizzie and Skitter start tickling the fast biter.

Meanwhile, the purple sharptooth charges at Tria, but then Daddy Topps shows up to help. It charges at him and he lifts the fast biter into the air. Later, the blue sharptooth fights off Lizzie and Skitter after biting its own tail. Petrie and Spike try to protect the two Tinysaurs from both of the sharpteeth, but then the entire Tinysaurus herd comes to help. They climb the raptors, biting them.

Soon both Fast Biters collide, however, knocking the Tinysauruses down. The raptors try to kill the scattering Tinysaurs but Topsy runs over to protect them. The sharpteeth split off and circle around him to attack his sides, but they are then scared off by the appearance of the rest of the Great Valley's population. The raptors flee back to the cave leading back to the Mysterious Beyond, with the blue one stopping to snarl at the flatteeth before finally retreating.


  • Even though these particular characters haven't been seen since XI, many other Deinonychus appear throughout the rest of the series, most prominently in the television series, wherein two Deinonychus, Screech and Thud, serve as subordinates for the main antagonist of the show, Red Claw.
  • The two Fast Biters appear on the back on the DVD cover of their film.
  • The blue Fast Biter looks exactly the same as the Sharptooth Mom from "The Great Egg Adventure". It may even be the Sharptooth Mom, which would mean that the blue sharptooth is female.
    • It also bears a striking resemblance to Screech, though the XI fast biter has red eyes, while Screech has yellow.
  • They also similar to other fast biters in The Land Before Time XIII: The Wisdom of Friends.
    • both are blue and purple.
    • Blue one has both red eyes. but purple one in Wisdom of Friends has yellow eyes.



  1. Tria refers to the purple raptor with male pronouns.

Sharpteeth in The Land Before Time, in order of appearance:
Sharptooth (character) | Chomper | Papa Sharptooth | Mama Sharptooth | Fast Biters (The Time of the Great Giving) | Ichy and Dil | Swimming Sharptooth (Journey Through the Mists) | Swimming Sharptooth (The Mysterious Island) | Sharptooth Flyer Family (The Mysterious Island) | Plated Sharptooth (The Mysterious Island) | Meanest Sharptooth | Fantasy Sharpteeth (Lone Dinosaur Song) | Browridge Sharptooth (The Secret of Saurus Rock) | Bigbiter Sharptooth (The Secret of Saurus Rock) | Fast Biters (The Stone of Cold Fire) | Bigbiter Sharptooth (The Big Freeze) | Sharptooth Swimmer (Journey to Big Water) | Belly Dragger (The Great Longneck Migration) | Sharptooth Pack (The Great Longneck Migration) | Fast Biters (Invasion of the Tinysauruses) | Sailback Sharptooth (The Great Day of the Flyers) | Hookthumb Sharpteeth (The Wisdom of Friends) | Red Claw | Screech and Thud | Fantasy Sharpteeth (Rhett's Story) | Fast Biters (The Lonely Journey) | Sharptooth Family (The Lonely Journey) | Belly Draggers (The Amazing Threehorn Girl) | Sailback Sharpteeth (The Hermit of Black Rock) | Sharptooth Mom | Fast Biter Babies | Featherhead Sharpteeth (Journey of the Brave) | Horned Sharptooth (Journey of the Brave) | Minor Sharpteeth |
See Also
Main families