Mutt and Nod, voiced by Jeff Bennett and Scott Menville, are characters and antagonists turned-supporting protagonists in the Land Before Time film series. They are the friends of Hyp who appear in The Land Before Time III: The Time of the Great Giving as well as the TV series episode The Great Egg Adventure. A pair of Muttaburrasaurus and Nodosaurus adolescents they serve as Hyp's lackeys and generally follow his lead. Like Hyp, their names consist of the first part of their individual species' names although they may also be a reference to their personalities: "Mutt" is like a loyal but unintelligent dog while "Nod" mindlessly agrees with everything Hyp says.
They first appear alongside Hyp when the trio interrupt a game Littlefoot, Cera, Petrie, Ducky and Spike are playing, taking away their rock. They run away with Hyp when a meteor shower occurs. During chasing Littlefoot and his friends from telling the grown ups that they found water Mutt also accidentally call a wasp a dummy causing it to chase them away. Throughout the film the pair assist Hyp in his schemes and ultimately accompany him into the Mysterious Beyond to look for water. Initially the two are hesitant, and point out that Hyp is just as scared as them because like them he ran away from the meteors. He simply retorts he just didn't want them to feel stupid, and taunts them for their caution. Not wanting to be perceived as babies they go with him.
When Hyp becomes stuck in a tar pit and pleads for help, Mutt and Nod prove incapable of assisting him, due to arguing over which one of them must save him. It is therefore Littlefoot and the others who save Hyp, and not his friends. After this, when Fast Biters attack, Mutt and Nod run away and make fun of Hyp's father for risking his neck, prompting Hyp to force the pair to assist him and the others in pushing boulders down upon the sharptooth.
Later, in The Great Egg Adventure, the pair are back to doing whatever Hyp tells them, including helping out Littlefoot in moving Fast Biter eggs away from the Great Valley. They split into different teams, with Hyp assisting Littlefoot, while Nod goes with Ducky and Petrie and Mutt with Chomper. They succeed in getting the eggs safely to a location picked out by Chomper.
- In The Great Egg Adventure it is revealed that Nod has an allergic reaction to pollen.
- Mutt is similar to Lube from Nickelodeon's Catdog.
- In terms of personality, Mutt & Nod, as well as their pal Hyp are similar to the egg thieves in The Land Before Time 2: The Great Valley Adventure.
- Despite the namesake of his species, Mutt's appearance looks more similar to Hadrosaurian features primarily to Hadrosaurus.