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The Thunderclaw is a Tracker Class dragon introduced in How to Train Your Dragon 2. It's name was first revealed in the game Dragons: Rise of Berk, and was later confirmed by an official source too.


Members of this Tracker Class breed form running, rumbling herds very easily. Talk about safety in numbers... unless you are in their way during a stampede. The free-spirited Thunderclaw is all business when it's time to face opponents on the field of battle.


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 colourful spotted markings of varying colours. Some Thunderclaws even sport iridescence!


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 make stampedes. The numbers allow them to have safety in numbers from larger predators. Thunderclaws are strong runners with lots of endurance. 


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.


These dragons shoot a greenish fire similar to Scuttleclaws. Whilst breathing fire, the nasal horn seems to glow slighty from the inside as they emit flame.

Titan Wing

Source: Dragons: Rise of Berk

Titan winged Thunderclaws are yellowish green and have dark green spots on their bodies. The ledges on their snout becomes dark green, along with the spines along its back. The sail on their backs has grown into a sharp spike. Titan Thunderclaws develop spikes under their chin and two prominent canines on their lower jaws.

Known Thunderclaws


  • The Thunderclaw is the third dragon with "thunder" in its name, although all of these dragons are in different classes.
    • The "Thunder" in the name "Thunderclaw" was meant to represent the creature's tendencies to stampede in a group, causing the ground to rumble and to even potentially defeat it's enemies.
  • During the introduction to Valka's Bewilderbeast, a Thunderclaw is seen that appears to have iridescent scales like the Stormcutter.
  • The Thunderclaw was created using a modular system to mix and match preset body parts onto different dragons. It was created from the same base that was used for the Snafflefang, Snifflehunch, Shovelhelm, and three other unknown dragons.
  • The Thunderclaws in Valka's Sanctuary are lighter and more vivid in color, while the ones in Drago's army are darker and duller in color, probably because they are not taken good care of.
  • A Thunderclaw's fire blasted off Drago Bludvist's prosthetic arm. Ironically enough, it was one of his armored Thunderclaws who shot the blast.