close-up of a all-black cow with a string of mucus on the nose

animal wildlife mammal eye nose organ whiskers nature pet head green flower grass cat leaf invertebrate plant close-up all-black cow lit sideways sun focus animal#39aph39#s shiny hair string mucus narrow depth field rhinitis infection infectious alone breed domestic adorable agriculture background beak beautiful beef black bovine bright carbon dioxide cattle close closeup countryside cute dairy dark economy environment face farm farming fauna front hairs healthy herbivore macro mouth natural nostrils outdoor pasture plane portrait saliva white