Thunderclaw (How to Train Your Dragon)

The Thunderclaw appeared in 2014 movie called How to Train Your Dragon 2. The Thunderclaw is a medium-sized Tracker Class dragon that first appeared in How to Train Your Dragon 2.

Thunderclaws have a ledge on their chin and a large sail on their back. Their bodies have large spots or stripes as patterns and they have a thick, fat tail. Thunderclaws are a squat dragon with large bodies and short, but strong legs. They are, for the most part, bipedal but can rest on their forelimbs when necessary. They have a large nose horn and an elongated chin. Their hides have colorful spotted markings of varying colors. Some Thunderclaws even sport iridescent scales, as seen during the introduction to Valka's Bewilderbeast in How to Train Your Dragon 2.

This dragon usually lives on the ground, although it can fly when it needs to. They tend to live in packs, and have a tendency to stampede. Staying in groups allow the dragons to have safety in numbers from larger predators. As such, they prefer open plains for it allows them to gather freely in large numbers.

Powers and Abilities

 * Sense of Smell: Thunderclaws have an acute sense of smell which allows them to track and locate items easily. This ability has allowed Vikings to classify them into the Tracker Class. They prefer to use their tongues to aid them in smelling, like snakes or lizards. According to To Berk and Beyond, Thunderclaws flick their tongues out in the air like snakes to 'taste' the air and as a result, frequently have their tongues lolling out.
 * Firepower: Thunderclaws can shoot either streams of green fire that is similar to the Scuttleclaws’, or streams of normal orange fire. Whilst breathing fire, their nasal horn seems to glow slightly from the inside as they emit flame.
 * Strength: Thunderclaws are strong dragons, which is shown when Sailback managed to carry Toothless all the way to Valka's Mountain, when several armored Thunderclaws were able to pull some of Drago's war machines, and when Bonesnarl carried Snotlout with the extra weight of a metal armor while running with minimal signs of struggle. Thunderclaws are also able to break through a metal roof with little to no effort.

Weaknesses
It was revealed in The Serpent's Heir that Thunderclaws don't fly when they are panicking. This could make them easy to capture, which might explain why Drago had so many in his army.

Eret in To Berk and Beyond indicates that feeding a Thunderclaw a piece of yak butter gums up their teeth and tongue, distracting them and affecting their tracking ability.