Bed Bugs are insects mentioned once in the DreamWorks Dragons Franchise.
Bed Bugs (Family Cimicidae, Order Hemiptera) are a parasitic insect group known for its exclusive diet of blood. Different species specialize in specific host species. The "Common Bed Bug" (Cimex lectularius) primarily feeds on humans. Bed Bugs have a stylet fascicle - a "beak" or proboscis - that pierces and saws through the skin until a blood vessel is reached. Its saliva contains analgesics and anti-coagulants. Feeding is complete in about 5-10 minutes. Bed Bugs are nocturnal and will return to their hiding place during the day whether they have gotten a blood meal or not.
Bed Bugs have no use in the Franchise whatsoever, or even in real life. They are, however, a major pest of humans especially in their sleep. Presently, they are not known to be vectors of any form of diseases.
|“||Bed bugs? Once those things show up, you can never get rid of 'em.||”|
|— Ruffnut guessing|