I'll admit that the gory plotline of last night's big winner  No Country For Old Men made the film not appeal to me — I'm a movie wuss at even the slightest hint of violence and bloodshed! However, despite the dark subject matter (which included the shooting of a dog), the set was monitored and detailed evaluations were given . . . no pups were hurt during the making of this film.
The American Humane Association  (not to be confused with the animal protection organization, the Humane Society of the United States ) has overseen movie sets since 1940 to make sure animal actors stay safe while portraying heroes, villains, companions, and comedians. Even in films (and commercials) where animals are shown in passing, this organization will be on set to monitor practices and offer ratings from unacceptable (where disregard for safety directly caused the injury or death of an animal) to outstanding. No Country for Old Men was awarded the "monitored: outstanding"  designation meaning that AHA observed the filmmaking, screened the finished product, and cross-checked all animal action seen on screen, and offered it the end credit disclaimer of "No Animals Were Harmed."