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InGen Carnivore Profile:


Name Meaning: Double Crested Lizard

Nickname: Dilo

Timeline:  Early Jurassic (193 mya)

Diet: Carnivore

Family: Neotheropoda, Dilophosauridae

Length: 20 feet long

Height: 10 feet tall

Weight: 1 ton

Range: Isla Sorna


This primitive theropod is a sight for sore eyes, recognizable mainly by the two crests on it's head. Unlike the previous Dilophosaurs who possessed frills and the ability to spit venom, the more accurate Dilophosaurus wetherilli is an astonishing dinosaur. Although smaller than big predators like T.rex, Dilophosaurus is not one to be taken lightly, especially by scientists and observers. It's small size and lightweight make it a full fledged hunter that can actively pursue it's prey.


Dilophosaurus lives in the island's Northern savanna, where it thrives as one of the more abundant predators. It coexists alongside Monolophosaurus, Gasosaurus, Liliensternus and the elusive Afrovenator, with each predator occupying a specific niche. The tall grassy areas and shaded trees provide excellent cover when ambushing potential prey. 


Dilophosaurs live solitary lives most of the time, but some males have been seen allowing females to enter their territories without conflict. However, males will instantly become aggressive with other predators who trespass through their land. Outside of mating season, females are noted for being very hostile towards marauding males who try to steal their kills. When coming of age, juvenile Dilophosaurs will be forced to leave their mothers and go on their own as they mature from adolescence to adulthood.


Dilophosaurs operate mainly as ambush predators, sneaking up within a few feet of their targets before launching an attack. But if the chance arises, they will readily engage in direct pursuit. Dilophosaurs usually kill their prey by sinking their teeth into the neck or by tearing off pieces of flesh, thus causing excess bleeding.

In the savanna, Dilophosaurus hunts an abundant variety of small to medium sized herbivores. Prosauropods make up at least 80% of the Dilophosaurus diet, and include species of many sizes like Anchisaurus, Riojasaurus, Mussaurus, Yunnanosaurus, Plateosaurus, Blikanasaurus, Lufengosaurus and Massospondylus. The ornithopods Dryosaurus, Valdosaurus and Thescelosaurus are also taken on a minor basis, while the smaller Othnielia, Fabrosaurus and Pisanosaurus are left to the juveniles. Adult Therizinosaurus and Euskelosaurus are generally excluded due to being too big to attack, but young and weak individuals are sometimes targeted. From time to time, Dilophosaurus will also take Pachycephalosaurus and Montanoceratops as potential prey.

Like most carnivores, Dilophosaurus shows no restraint in scavenging for free meals if hunting becomes impossible.

Interspecific Competition

Even though it is the most common predator in the savanna, Dilophosaurus must contend with competition from other predators it shares the land with.

Monolophosaurus is seen as the arch rival of Dilophosaurus, with whom it is frequently sympatric. The two predators both often hunt the same prey items depending on the circumstances of food availability. Despite being skilled hunters themselves, Monolophosaurs more commonly resort to scavenging off Dilophosaur kills. Although slightly smaller, Monolophosaurus is willing to challenge a Dilophosaurus for the rights to a carcass. They are also known for attacking and killing young Dilophosaurs to eliminate future competition, much like some of today's modern predators. In fact, some recorded footage showed a male Monolophosaurus attempting to raid a Dilophosaur nest before being chased off by the mother.

Liliensternus and Gasosaurus both tend to avoid competing with Dilophosaurus by occupying a different niche in which they mainly hunt small prey. However, Gasosaurus will sometimes follow Dilophosaurus over long distances in the hopes of securing a carcass. Liliensternus on the other hand poses a threat to juvenile Dilophosaurs.

The elusive large megalosaurid Afrovenator is the only predator that can be regarded as a true danger to an adult Dilophosaurus. Twice as big and just as aggressive, Afrovenator can easily kill a Dilophosaurus if it catches one. In areas where the two theropods are sympatric, Dilophosaurus is restricted to only hunting small and medium dinosaurs while Afrovenator focuses on bigger ones. Compared to Monolophosaurus, Afrovenator proves to be more successful in stealing kills from Dilophosaurus. Further studies from live observation show that Afrovenator, when hungry enough, will actively seek out Dilophosaurus kills by following the smell of blood. Upon reaching the exact location, it will then proceed to drive off the smaller predator before claiming it's kill.

And there you have it, a profile about the Early Jurassic predator of Arizona, Dilophosaurus.

I'm trying my best, I really am.

Next up will be the theropod who first started everything about dinosaurs following it's discovery and naming.

The one.............the only.........MEGALOSAURUS!

After that I'll do a profile on Carnotaurus. I already made one for Baryonyx in advance, but it's not posted yet. The rest will remain classified until then.

Jurassic Park belongs to Universal Studios.
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Submitted on
January 15
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