This is a list of the family members of the main characters in The Land Before Time franchise. It does not include the main characters, but lists the family members according to which character/s they are related to.
Grandma and Grandpa Longneck
They are Littlefoot's loving grandparents, who have looked after him ever since his mother died, and he came to the Great Valley. They appear in all The Land Before Time films.
Bron is Littlefoot's father. He first appears in The Land Before Time X: The Great Longneck Migration, when he and Littlefoot finally meet. Littlefoot's name is taken from the nickname Bron had when he was a child.
She has never been given a name but is most commonly referred to as "Littlefoot's Mother" or as "Mama Longneck" by fans. She only appears in the original Land Before Time, during which she dies while trying to save Littlefoot and Cera from Sharptooth.
Shorty is Littlefoot's adopted brother. He appears for the first time in The Land Before Time X: The Great Longneck Migration, and though he bullies Littlefoot for a time, Littlefoot eventually appeals to him by suggesting that they pretend to be brothers. Later Littlefoot asks Bron to adopt Shorty, and they really become brothers.
Migrating Longneck Herd
They are cousins of Grandma and Grandpa Longneck, who are implied to be related on Grandma's side. The most notable members of this clan are The Old One, the wise matriarch of the herd, and Ali, who is the only child in the herd before they merge with another herd of Longnecks.
The matriarch of the migrating Longnecks; she is very old and wise, although often other characters find her claims difficult to believe.
Ali is a female Longneck child, and a distant cousin of Littlefoot. She comes to the Great Valley with her mother and herd. Littlefoot and Ali grow very close to each other in The Land Before Time IV: Journey through the Mists, and from this, fans often write in fanfiction about the two meeting again as adults or teenagers, and falling in love and marrying. However, because of their family-ties, other fans cite this as an incestuous match.
Cera's mother is seen briefly at the beginning of the first movie when Cera hatches; again when Littlefoot first meets Cera, and when Cera is separated from her family in the Great Earthshake. She is not seen when Cera reaches the Great Valley, along with Cera's siblings, and it is unknown what happened to them. Not much is known about her personality, but it seems she didn't trust very much other dinosaur species, as she roars in fear and worry at the sight of Littlefoot (a sauropod) playing with Cera (a ceratopsian). Unlike her husband, she did not seemed as bigoted as he is, though; however with her roles being relatively minor it is unknown of her personality. It can be implied however that she might be bigoted considering her reaction to when Cera interacted with Littlefoot.
Dinah and Dana
Dinah and Dana are the niece and nephew of Cera. They made their only appearance to-date in The Land Before Time VI: The Secret of Saurus Rock.
Tria is Cera's step-mother, who apparently dated Topps when they were younger. She first appears in The Land Before Time XI: Invasion of the Tinysauruses, in which she and Topps renew their relationship.
Tricia is Cera's half-sister and Tria's daughter. She debuted in The Land Before Time XII: The Great Day of the Flyers.
Ducky and Spike's Family
Ducky and Spike's Mother
Ducky and Spike's Father
He is rarely seen but has appeared now and again, for example in the background The Land Before Time VIII: The Big Freeze. It is sometimes asked whether this is due to how Ducky's original voice actress, Judith Barsi, was murdered by her own father, according to Internet Movie Database.
Ducky and Spike's Siblings
There are at least twenty two young swimmers (male and female). Although they look very similar to Ducky, they lack her sense of adventure, preferring to stay at home with their Mother. Ever since Ducky introduced them to "our new brother, Spike" at the close of the first film, all the swimmers have happily accepted him as part of the family, even if they do not understand him as well as Ducky does. The total fourteen came in two clutches, as in the first film; Ducky's nest contained about half a dozen eggs. Later, in The Great Valley Adventure, Ducky's parents are shown to have another nest, with about another half dozen or so. The film ended with the new clutch hatching. Later, in The Land Before Time XIV: Journey of the Brave, another clutch of eight eggs is laid, which hatches during the start of the movie.
Ducky and Spike's Aunt
Little is known about her, as she never made a physical appearance but she is mentioned in The Land Before Time XII: The Great Day of the Flyers when the gang is going after Guido after he begins to sleepwalk, with Ducky claiming that she sleep swims and that her mother tells her not to wake her up when she swiming in her sleep.
Petrie's mother is a recurring character in the series, and the only recurring prominent adult flyer.
Petrie's SiblingsPetrie's brothers and sisters are voiced by Jeff Bennett (who also voices Petrie), Nika Futterman, and Susan Blu. They've made brief appearances in I-XI. They have a bigger part in The Land Before Time XII: The Great Day of the Flyers. However, the number of brothers and sisters Petrie has sometimes changes between films; four or five is the most common average. One of his siblings wants to be like Pterano. There many inconsistencies relying on number of Petrie's siblings throughout the franchise.
Pterano is Petrie's ambitious but ultimately good-natured uncle. He had a major role in The Stone of Cold Fire. It was originally rumored that he was to appear again in The Great Day of the Flyers, however, the idea was apparently dropped.
These figures have only appeared in The Land Before Time II: The Great Valley Adventure and The Land Before Time V: The Mysterious Island. They are both green in color, but the mother and father are distinguished by exact shade, with the father being much darker (this may reflect a gender difference). Although they are ferocious predators like other Sharpteeth, they are also devoted parents. It is suggested in the series that they requested Ruby to be some sort of babysitter for Chomper. Both Ruby and Chomper were separated from their families by Red Claw and his minions; so far they have yet to reunite.
Chomper's parents are antagonists in the second movie, but become friendly towards the main characters at the end of the fifth film, after Littlefoot saves their son.The two care about Chomper very much, and are shown to have worrisome, even overprotective, natures over their little hatchling.
Chomper's dad is shown to be possessed of a healthy, if warped/carnivorous, sense of humor. He worries about his son's strange habit of gathering plants; something no sharptooth would ever willingly ingest.
Chomper's mom is a kind and devoted mother, willing to help her son learn to be a hunter. This is shown when she comes across Chomper seemingly having cornered a young longneck, but unable to figure out what to do next. She reminds Chomper not to play with his food, and then nuzzles him before leaving her son to his "meal".
Ruby has a mother, a father, and two siblings. They have appeared in "The Star Day Celebration" and "Return to Hanging Rock". They have wrinkles, implying age. Her mother is pink and her father is indigo. Her father also has an elderly-like voice. Her siblings are magenta and violet. The magenta one is a girl and the violet one is a boy; they are twins. Ruby is the eldest child.