Poison Darters are Tree Dragons that can be trained but with much difficulty. In How to Break a Dragon's Heart, the Berserkers have a few trained Poison Darters that catch Hiccup and Fishlegs. They eventually join Furious and the Dragon Rebellion.

Traits and Abilities

Poison Darters are medium to large dragons with excellent eyesight and sense of smell. They are one of the species of dragons that can shoot projectiles out of their fire-holes (Razorwings and Leviathorgans are two other species). As their name implies, their projectiles—or darts—contain poison that can render a human unconscious. This poison is strong enough to kill smaller animals.