Devil's Tooth, aka Hydnellum peckii, is a fungus in the genus Hydnellum of the family Bankeraceae found in many places in the world including North America, Europe, and Asia.
These fungi stand at around 6-20 cm tall. Tooth fungi are distinguishable because they create pendant, tooth-like, or spine-like projections that act as spore carriers. These projections are found on the bottom of this fungus's head, and hang down in white, short, tooth-like daggers from it body.
Devil's tooth forms mutualisms with coniferous trees through long thin thread like parts of it that connect with roots in the tree. The tooth secretes a fluid that acts as an anticoagulant and is similar to heparin, a medication. Interestingly, scientists aren't sure exactly what this liquid is, though. It's the pigment which acts as an anticoagulant, and other properties within the liquid may help treat Alzhimers. This liquid oozes out in the iconic way shown here in its young state. When mature, the fungus takes on a pinker tone and stops exuding liquid.
The fungus was first discovered in 1912 or 13 by Charles Peck, a man who found nearly 3000 fungus species in his lifetime.