This deceptive Mystery Class ambusher buries itself and uses its super sweet-scented tongue to lure its prey. If you have a sweet tooth, BEWARE! When the Sweet Death picks a sweet spot in a battle, it usually stays put until its acid attacks win the day.
The Sweet Death has a rather short and stubby body. It has a broad snout, wings, and a thick tail. The Sweet Death has a light sandy brown color with stripe-like patterns that resembled a tiger's. The stripes give the dragon a somewhat bumpy and segmented appearance.
Titan Wing Sweet Deaths are a pinkish-red in color, with a peach-colored belly. They still look rather stubby, with a thick tail. White spikes protrude from their entire body and their eyes are bigger. Also, their wings are light peach in color. A Sweet Death in titan form has a tail covered with smaller spikes.
Hiccup: "Sometimes when I am exploring, I see these sweet-smelling, little pink saplings. They look amazing. But if I try to get too close, Toothless won't let me."
Fishlegs: "Thank gods for Toothless! That sounds like the tongue of the Sweet Death! It's trying to trap you."
— Rise of Berk
The Sweet Death's tree-like tongue may be a camouflage. Unsuspecting victims may go closer to it to its tongue and it gives the Sweet Death an opportunity to strike. It appears to have pink saplings, according to Hiccup. As part of a mission, Hiccup mentions that the Sweet Death's tongue looks like a tree. Toothless seems aware of the danger and does not allow Hiccup to inspect the "tree" further. This shows that dragons may be able to tell that it is a Sweet Death and this camouflage is targeted at other animals.
Strangely, despite being able to shoot acid, the Sweet Death's saliva is a basic solution, which can be neutralized by adding twenty-five acid droplets, as discovered during the "Secret of the Leviathan" expansion of the game School of Dragons.