Most suctorial is a term used to describe an organism that feeds by sucking fluids or blood. There are several synonyms for this term, including hematophagous, haematophagic, bloodsucking, vampiric, and parasitic. Hematophagous or haematophagic is often used to describe insects that feed on blood, such as mosquitos or ticks. Bloodsucking is a general term that can describe any organism that feeds on blood. Vampiric is a term often used to describe fictional creatures that feed on blood, such as vampires. Parasitic describes any organism that lives off of another organism, such as a tick that feeds on a mammal's blood. All these synonyms essentially describe the same thing, an organism that feeds by sucking fluids or blood.