4 KudoZ points awarded for this answer. Comment: "Zamiast komentarza - fragment dyskusji o powiedzonkach: Well it's like this. Horses sweat, Hens do not, Pigs sweat but neither Cows, Rabbits, Dogs, Cats or Frogs sweat. Snakes, Hares, Goats, Ducks, Sea Horses, Seals, Haddock, Limpets, Crabs, Sharks, Cockroaches, Ants and Elephants do not sweat. Now I can see a trend emerging: few animals, fish, amphibians, insects or crustaceans sweat but those who do, like the Horse and the Pig, boy do they sweat when the put their minds to it, especially the Horse. Given this is true, and I stand to be corrected on some minor detail, then when someone wanted to emphasis the volume of sweat he/she was producing in a hot environment they would oft times exclaim "I be sweating like a pig" or, if the sweating was even more severe, they would boast "Twas so dammed hot I sweated like a Horse. Other than this I have no answer. PS. Mysz, wedlug Skorupki poci sie nie tylko ze strachu, ale w ogole. PS. Bathing in sweat, etc. - oczywiscie tak, ale kon jest blizej. (Podobno to takze mysz, ale wygenerowana przez propagande polityczna)."