Cartoons were created for kids but have long since become a staple in children’s, adult, and family entertainment.

As kids, we watched and enjoyed animated movies without any thought of the technical challenges and expertise that went into making them. We certainly didn’t look out for the kinds of missteps and mistakes that we see as adults.

If you like your cartoon films unspoiled, then look away now because we are about to show some howling oversights that, once you know about them, you can never unsee.

One movie has even made the list twice. Bet you can’t guess which one it is.

10. The Incredibles (2004)

In The Incredibles, the father of the family, Mr. Incredible, has newspaper clippings celebrating his previous escapades hanging on his office wall. One of the old and yellow front pages has a date of September 16, 2002, which is roughly 40 years ahead of the alternative 1960s when The Incredibles is set.

9. Cinderella (1950)

In the 1950 classic Cinderella, the happy bride is seen riding off into the sunset with her prince in a golden carriage.

In one shot, the new princess has long sleeves on her gown, completely covering her arms. In the next shot, the sleeves have miraculously shortened to cover only her shoulders.

Cinderella is not the only Disney Princess on this list; slide 5 has a great princess blunder too.

8. Cars 2 (2011)

In the Disney sequel to the classic movie Cars, there is a panning shot of the vehicles attending the Porto Corsa, the second race in the World Grand Prix.

Several of the vehicles in the shot are, at least partially, sinking into the floor. The black Mercedes circled in the photo is the worst of the sinkers.

7. Toy Story (1995)

During the scene when Woody and Buzz are trying to get back to the other toys in the moving van, the ramp handle that Woody uses is clearly black. When Rocky Gibraltar, the wrestling figure in the movie, uses it a short time later, the ramp handle has changed to red.

The animators didn’t learn their lesson from this goof – there are more, this time from Toy Story 2 further down the list.

6. The Little Mermaid (1989)

Not only is Ariel magical in The Little Mermaid, but it would also appear that the animators thought Prince Eric’s statue was magical, too.

During the scene where Grimsby presents the prince with the sculpture, you can clearly see the right arm of the statue in several different positions. The glove on the same arm also changes in style.

This is just one of The Little Mermaid’s mistakes on this list. The other is a whopper!

5. Frozen (2013)

During Frozen, Anna and Hans share a romantic song which is lit up by a beam from the lighthouse. Their silhouettes are thrown onto the sail of a ship in the harbor, but their silhouettes mysteriously float in mid-air instead of on the walkway where Anna and Hans are standing.

4. The Little Mermaid (1989)

In the scene where Prince Eric and Ariel are in a row boat and about to kiss, Ariel’s hair is clearly loose around her shoulders.

However, her shadow is wearing its hair in a ponytail. This is one of many The Little Mermaid mistakes which is why the Disney classic deserves two spots on our list.

3. Toy Story 2 (1999)

It would seem that some of the toys in Toy Story 2 may be reflectionless vampires as well as sentient playthings.

When Hamm uses the remote control to turn the television off, we can see the TV screen, but there is no reflection of Hamm and Rex who are standing right in front of it.

2. Beauty And The Beast (1991)

In one scene of Beauty and the Beast where Belle and Gaston are talking, they both cross in front of the mirror at different moments.

Gaston’s reflection is visible when he is in front of the mirror, but moments before when she was in front of it, Belle cast no reflection at all.

1. Monsters Inc. (2001)

Towards the end of Monsters Inc. when Sully and Mike are confronted by Roz, there are several monsters in the room in biohazard suits.

Each monster has their ID number on their suit, and 00112 can be seen both beside Roz and beside Mike and Sully on the opposite side of the room.

Animators do a fantastic job, but they are human and, as you have just seen, they can make mistakes just like the rest of us.

Unfortunately for them, if they make a mistake it is immortalized forever. The world gets to see it, and they make fantastic lists like this one.

We know there are plenty of other goofs, gaffes, and blunders out there, so we want you to track them down and share your favorite here with us. You never know, perhaps you will be the first to point out a particular mistake and we will use yours on our next list.