All the characters are technically nude, but obviously nothing is shown.

In one scene hunter's shotgun barrels are shown firing and ducks are shot down out of the sky.

In one musical number a duck on a merry-go-round hits and knocks over a bunch of other ducks as it revolves around.

In one scene a duck is pulled into a locker and is implied he's beat up off-screen.

Name calling such as "sissy", "dork", etc.

Elmer's father talks about how he offered the other dads drinks and is shown in one scene drinking something that's supposed to be a stand-in for alcohol.

There are two scenes where Elmer hears his dad talking about how frustrated and disappointed he is with him and how "he's no son of mine" which makes Elmer cry.

Some viewers may pick up on weird homosexual undertones. All the male ducks call Elmer a "sissy" for hating sports and liking art, puppetry, worrying about his clothes, hanging around the female ducks, and other "girly" things instead.