Bloodsucking mosquitoes are well-known. Contrary to popular belief, only female mosquitoes bite. Both sexes benefit from sugar and nectar. This is manly. Eggs require blood's lipids and proteins.
Aggressive, territorial. Hood mockingbirds eat seabird eggs and hawk kills. They don't hurt animals for blood, but will drink from a wound. Bird and sea lion wounds are affected.
Sleeping horses, pigs, and cattle are vampire bat food. Night hunters can bleed for 30 minutes. They slit their tongues with their teeth and sip blood. Tongue grooves catch blood, and anticoagulant saliva prevents clotting.
Fleas may leap 200 times their size. Bloodsuckers hop between hosts. Dogs, cats, rabbits, squirrels, rats, even birds get fleas. Narrow and easily flattening. This helps them ingest blood by burrowing through fur and feathers.
Ticks are one-eighth to five-eighths of an inch long and increase when they feed. They consume blood from birds, canines, reptiles, and humans. They exclusively eat blood.
The vampire ground finch drinks blood for nutrition. They graze on seabirds including blue-footed and Nazca boobies in the Galápagos Islands. Seabirds don't mind being pecked until blood appears.
These birds eat ectoparasites from cattle, giraffes, zebras, and impalas. In recent years, oxpeckers have been recognised as parasites. They sip animal blood from wounds and insect bites and peck at wounds to gain more blood.
The male vampire moth consumes vertebrate blood. They're in Malaysia, the Urals, southern and northern Europe. Rocking their proboscis punctures animal skin.
Dark-colored worms with suckers. Using mucus and suction, they inject hirudin to circulate blood. After a few hours, these leeches come off.