If you’ve ever been licked by a cat, you’ve experienced the roughness of the tongue, almost like sandpaper. A cat’s tongue is covered with barbs called papillae that face backwards and cause the rough sensation. The barbs are made of seratin, a substance found in human fingernails. The barbs serve a number of purposes. Cats […]
[[Image:|right|400px|S]]The parasite, Trypanosoma cruzi, is carried by Triatomine bugs and causes Chagas Disease. The triatoma bug is a varied species, all sharing similar traits. Triatomas are usually nocturnal and feed on the blood of mammals (including humans), birds and reptiles. Triatoma bugs have many names, reduviid bugs, kissing bugs, assassin bugs, cone-nosed bugs and blood […]
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