Snaptrapper

"It's the Venus flytrap of dragons, the devious Snaptrapper!"

- Gobber introducing the Snaptrapper

The Snaptrapper is a large Mystery Class (formerly Fear Class) dragon that was first mentioned in How to Train Your Dragon and first appeared in Book of Dragons.

Official Description
"While as beautiful and serene as an exotic flower upon first blush, the four-headed Snaptrapper is actually one of the most insidious and deadly dragons ever discovered. Upon opening their triple-split jaws, Snaptrappers release a sweetly intoxicating scent, stimulating hunger in nearby dragons and humans. When the unlucky victim goes foraging through the deceitful dragon's leaf-like wings and fins, the Snaptrapper unfurls and strikes. Although they are best known for producing the alluring aroma for unwitting prey, Snaptrappers can also exude a noxious odor to ward off would-be predators. One whiff of this pungent reek of putrefaction is enough to scare of even the most starving Titan Wing"

- Dragonpedia

"With triple-split jaws on each of this Mystery Class Dragon's 4 heads, it looks like a man-eating Venus flytrap. Just not as friendly. Snaptrappers may smell sweet, but their acid attacks pack a potent sting... that can melt through metal!"

- Dragons: Rise of Berk

Egg
Snaptrapper eggs resemble plants, with four leafy branches on top and several root-like protuberances on the bottom. Its surface is covered with vine-line patterns.

Hatchling to Adult
The Snaptrapper is a dragon that has four heads, each with three jaws. Their tails are forked like that of the Hideous Zippleback, and they look somewhat like the latter as well. Their unique, frightening jaws open up in a way that resembles a flower blooming, and the spines on their neck, body, and tail look similar to leaves. All four heads of the Snaptrapper have three tongues; these tongues each resemble the anther of a flower, as it is the Snaptrapper's tactic to resemble a plant of some kind to lure prey in close, or to help them hide from the dragon's few potential predators. They are one of the larger species of dragons and have very long necks and tails.

Titan Wing
Titan wing Snaptrappers have four heads and triple-spilt jaws with more teeth. They have developed a small tuft of pink petal-like structures at the back of their head. They have dark brown wings with some blue spots and yellow network vein-like patterns, as such, their wings resemble dead leaves. Also, their neck is clearly segmented and has spines protruding from the back of their necks, all the way down to their tail, which eventually splits into two yellow tails.

Firepower
The Snaptrapper is known to breathe a flammable mist containing methane and can produce the smell of chocolate from their mouths to lure in potential prey. They also spit acid that can sting foes and even melt through metal.

The Snaptrapper has been known to shoot a fiery mist of methane that can influence its target from even miles away.

Venom
The Snaptrapper's venom is one of the strongest of all dragons, only weaker than the Slitherwing's.

Camouflage
Superbly stealthy hunters, they can excellently camouflage themselves amidst dense vegetation, both to hide from larger dragons and from their prey. Their wings and scale tone are adapted to look like leaves and foliage, and they have leaf-like fins atop their backs.

If feeling threatened, the Snaptrapper can easily camouflage with its surroundings, especially amongst the natural foliage.

Producing Smells
Snaptrappers are well-known for their uncanny ability to emit a tantalizing scent compared to the sweet aroma of chocolate. This smell stimulates hunger in other dragons and humans nearby to lure them right into their jaws.

However, it can also release a horrid odor that can scare off even the most starving Titan Wings for self-defense.

Flexibility
Snaptrappers are not the most nimble flyers, a drawback of their heavy adaption for stealth-based hunting. However, their long, thin necks and tails are very flexible, similar to those of the Hideous Zippleback.

Behavior and Personality
Snaptrappers are said to love rain, frolicking in mud whenever a water falls from the sky.

Described to be beautiful, peaceful and calm at first sight, these dragons are fierce and aggressive. They are, however, incredibly patient. They will wait for food for days, and can be motionless in doing so.

How to Train Your Dragon
The Snaptrapper first appeared in the film within the pages of the Dragon Manual when Hiccup was trying to find information on Night Furies. He did not state the dragon's name, although the book says that Snaptrappers are extremely dangerous and should be killed on sight.

Book of Dragons
Bork was in a field raking leaves when a Snaptrapper attracted him through the smell of chocolate. The third head ate him and the entire dragon shed their scales, shed their claws, and grew them back, before spitting out Bork. He met again with a Snaptrapper when a storm came. Bork made a discovery that Snaptrappers love rain as the dragon played in the mud, spraying the mud all over Bork.

The Stowaway
When Hroar goes to Dragon Island in order to enrage many dragons and lead them to Berk, he does so with several Snaptrappers. However, after he is thrown off his saddle, the Snaptrappers and all the other dragons return to their island.

Dragonvine
While trapped inside a cave, Gobber tells a story about when he and Stoick fought and defeated a group of Snaptrappers in a cave, one of which was known as Death & Chocolates.

When Tuffnut, Ruffnut, Eret, Bayana, Skullcrusher, Barf and Belch were trying to find the root of a dangerous plant known as the dragonvine, they came across an ancient skeleton of a Titan Wing Snaptrapper. The Twins concluded that when the Snaptrapper died, its blood and pus fertilized a normal weed on the island, which then mutated into the deadly dragonvine.

Dragons: Rise of Berk
The Snaptrapper became available in Dragons: Rise of Berk, where the Leafy Snaptrapper - a breed of Snaptrapper - was introduced, along with three individuals, Brute Snaptrapper, Outsnapper, and Death & Chocolates.

School of Dragons
The Snaptrapper became available to ride and train for players in 2015. Phlegma the Fierce (the Botanist) is also shown to have a Snaptrapper named Snappy, appearing in the "Secret of the Leviathan" Expansion.

Trivia

 * The Snaptrapper is based off a Venus Flytrap, and also resembles both the Hydra from Greek Mythology and, to a much lesser extent, a European dragon.
 * It is revealed in School of Dragons that Snaptrappers and Hideous Zipplebacks are closely related, as they have a common ascendant.
 * The Snaptrapper is the first dragon whose lower jaw can split in two, with the second being the Catastrophic Quaken.
 * In the Book of Dragons short, the Snaptrapper is said to use the smell of chocolate to lure its prey. However, chocolate was unknown in Viking times, due to it being native to the Americas. It would have been more realistic to use honey, which was known to Vikings and is made from the nectar of flowers which the Snaptrapper's heads resemble. The use of chocolate might be a shoutout to the books though, due to one of the villains trying to find America.
 * The Snaptrapper is the only dragon that has yet to appear onscreen outside of the Book of Dragons short.
 * In Dragon Tracker Part 4 seen in the special features of DreamWorks Dragons: Defenders of Berk Part 2, the Snaptrapper was misnamed as the Snappertrapper.
 * The Snaptrapper is one of the eight dragon species that doesn't have forked tongues.
 * The others are the Flightmare, the Snow Wraith, the Razorwhip, the Death Song, the Triple Stryke, the Dramillion, and the Woolly Howl.