Related topics:AnimalsDiseasesWeird & WildScienceMore AnimalsAnimal blood comes in a rainbow of colours—here’s whyMammalsReptilesCrustaceansBloodLizardsMarine BiodiversityMorePhoto GalleryAnimals30 pictures of itchy animalsUnited StatesWeird & WildDiseasesArachnidsBloodParasitesMoreScienceWhy unreliable tests are flooding the coronavirus conversationDiseasesBloodEpidemicsPublic HealthCoronavirusCoronavirus CoverageMoreHistoryWhat can 200-year-old DNA tell us about a murdered French revolutionary?FranceDiseasesBloodDNAMurderMoreAnimalsVampire Bats Survive by Only Eating Blood—Now We Know HowWeird & WildAdaptationsBloodEvolutionNutritionVirusesPredatorsWildlifeMoreAnimalsBloodsucking Ticks Make Cement to Attach to Your SkinUnited StatesWeird & WildDiseasesArachnidsBloodParasitesMore