The second stage consists of the actual delivery of the puppies. The third stage is passing of the placenta. The afterbirth might pass with each individual puppy, usually within 15 minutes of delivery. If the mother has a few puppies in rapid succession, those placentas may come out en masse.
Comedies have also been classified in various subgenres, such as romantic comedy, crime/caper comedy, sports comedy, teen or coming-of-age comedy, social-class comedy, military comedy, fish-out-of-water comedy, and gross-out comedy.
Low comedy was first denoted as comedy for the commoners because it was most often practiced by street performers. Over time as low comedy began to include lewd jokes and more physical comedy, more mainstream performers began to practice this type of comedy: stand-up comedians, musicals, etc.