Ключевые слова: abstract, animal, assault, attack, backdrop, background, bacteria, biology, bird, black, car, cement, close, closeup, concrete, crap, dirty, disease, droppings, excrements, faeces, floor, flu, fluid, germ, gray, luck, macro, mess, messy, microbial, microbiology, organic, outside, pathogen, pigeon, poo, poop, rough, science, shit, sidewalk, texture, unlucky, up, virus, wall, wet, white, wood,