Parents need to know that the film Avatar is extremely violent, including explosions, deaths of main characters, animals killed brutally, and shooting with both guns and bows. The main characters are often in danger and/or peril. Plus, there some disturbing imagery, including arrow wounds. There is also a certain part in the movies where it's as if it's a montage of all the secondary characters dying. There is also a good deal of frequent strong language, including,"s--t", "bulls--t", "bitch", "bastard", "goddamn", "a--", "pissed off", "damn", and "hell." As for sex, a human "mates" with an alien, there is some kissing, and a couple is shown sleeping together.