blooder

From Middle English bloder, equivalent to blood +‎ -er.

blooder (plural blooders)

1. A person or creature which draws blood
2. A bloodsucker
   • 1810, Georges Louis Leclerc comte de Buffon, A History of the Earth and Animated Nature, page 278:

     The bat is so dexterous a blooder, as to insinuate its tongue into a vein without being perceived, it then sucks the blood till it is satiated, all the while fanning with its wings, and agitating the air […]

• Robledo, boodler