Buffalord

The Buffalord is a large Mystery Class dragon introduced in the Race to the Edge series.

Official Description
"Although it's been hunted to near extinction, the benevolent Buffalord holds the only cure to the lethal disease known as The Scourge of Odin. Once roaming across the archipelago in large herds, the Buffalord now lives a solitary existence grazing in peace and secreting a green drool with amazing curative properties. As such, this exceeding rare dragon would fetch a hefty price at any auction. Fortunately, the Buffalord has no interest in leaving its grassy plains and will keep any hunter at bay will its abilities: firing the many spikes studding its hide and doubling its size by inflating!"

- Dragopedia

Physical Appearance
Its head is similar to a tortoise's, with horns growing to the side and forward, like a yak, and a single horn resembling that of a unicorn or a rhinoceros growing atop the skull. It has very large wings, and four small legs that are positioned close to the middle of its body. As an herbivorous dragon, it is quite rotund.

Firepower
A Buffalord's fire is uncontrollable, and can explode in an instant. Also, it seems like the Buffalord can't control when it will fire, so these explosions happen randomly (mostly when it is attacked).

Inflation
The Buffalord is capable of inflating its body to twice its normal size, scaring away any predator who tries to attack it, like a pufferfish.

Shooting spines
Similar to Deadly Nadders, Whispering Deaths, Screaming Deaths and Razorwhips, the Buffalord can shoot spines from any part of its body, but it seems it can only shoot them when it inflates its body.

Saliva
Its green drool has amazing curing properties, and is the only known cure for a lethal disease known as the Scourge of Odin. The Buffalord's saliva is only effective against the Scourge of Odin when mixed with the herbs it feeds upon.

Strength
As shown in the series, aside from its abilities of inflation, the Buffalord is capable of lifting and dragging a ship, which forced Ryker and Viggo to set the creature free. When it was captured it was able to easily destroy most of the ship it was inside, especially impressive as Viggo's ships are designed to keep Dragons contained.

Personality
This big, Mystery class dragon is possibly the laziest dragon, seeming even more so than the Hotburple. Buffalords are described to be extremely docile, even 'yak-like, by Fishlegs in Race to the Edge as it did not attack the riders even when they approached it. Snotlout contributed this to their near-extinction. They are however, known to be stubborn and refuse to leave their homes and will willingly attack any hunter that tries to remove them. This is due to their diet; the Buffalord only feeds on certain plants, and cannot survive without plants in its diet.

Trivia

 * The Buffalord's name came from "buffalo." Like the animal, Buffalords can be docile but dangerous when they feel threatened. They also live in grassy plains in large herds, and have been hunted to near-extinction because of their saliva.
 * The Buffalord is the second dragon that has been confirmed to be near-extinction. The first being the Sliquifier, due to Sliquifiers being hunted by Scauldrons.
 * One of the Buffalord's roars is actually a reused roar of the Red Death from the end of How to Train Your Dragon film.
 * The Buffalord cashes a "hefty price" for its saliva because the spit glands are able to produce the only cure for the Scourge of Odin, a deadly disease.