Making a movie is no easy feat, and that goes double when the movie is an animated feature. Making cartoons and computer graphics move around and express themselves like real people requires a ton of people craning their necks for long hours at computer screens.

Sometimes, no matter how much work people put into a movie, there are inevitably going to be a some mistakes that make it past the editor’s room. Here are 19 of the biggest bloopers that you won’t believe actually made it into the final cut of your favorite animated films!

1. Beauty and The Beast (1991):  In one iconic scene, The Beast slashes a painting; in another scene later on, however, Belle discovers the painting slashed the opposite direction. Woof.

2. Shrek (2001): When Shrek and Donkey were talking about saving the swamp in one scene, animators forgot to keep an eye on Shrek’s… eye. He’s supposed to closing his eyes, but you can see one right through his eyelid. Whoops!

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3. Finding Nemo (2003):  When Nemo is desperately trying to escape the clutches of the dentist, he is fleeing as fast as his fins can take him from what is clearly a Ziploc bag with a plastic clasp. However, when the dentist finally does manage to scoop up Nemo, it’s clear he does it in a regular clasp-free little lunch bag.

4. Wreck It Ralph (2014): Vanellope von Schweetz loses her front tooth when she and Ralph are practicing their driving skills. The tooth is clearly gone… and then it mysteriously comes back in the following scene. Continuity fail!

5. The Lion King (1994): Simba’s friend, Nala, captures his heart during that journey with her companionship and sparkling green… er, blue… no, green eyes. Throughout the film, the color of her eyes changes from blue to green and back again!

6. Frozen (2013): When Queen Elsa builds her palace of ice singing her trademark ballad, “Let It Go,” her signature hairstyle — a long, loose braid — is behind her. Then, she moves it to the front of her shoulder. However, instead of going over her shoulder, she simply pulls the entire braid straight through her shoulder.

7. Aladdin (1992): During the climax of this film, Jafar has enslaved Princess Jasmine. She is wearing an elegant gold arm band on her right arm. Later, when Jafar shoves Jasmine to the ground, the bracelet mysteriously switches to her other arm!

8. Chicken Run (2000): Sneak a peek at Farmer Tweedy’s tally book, you’ll see that it changes from shot to shot. On one page, a chicken can be recorded as not laying any eggs, while in the next scene that number was oddly changed to check marks!

9. Lilo and Stitch (2001): In Lilo’s dance class, two drummers sit on the floor playing two identical gourd-shaped drums. However, after cutting to Lilo and cutting back to the drummers, one of the drums has been replaced with an entirely different drum. Who else smells a goof?

10. The Little Mermaid (1989): In one early scene, when the manservant Grimsby gives one of his many speeches, a sailor standing near him first appears in a shirt with black and white stripes. However, mere seconds later, the shirt the sailor is wearing has transformed into a light blue number with navy stripes. Oops!

11. Monsters, Inc. (2001): When this monster gets a sock stuck to his back, it sends the team into decontamination mode. However, this is one very special sock. The viewer never sees it move, and yet it certainly doesn’t stay in the same place…

12. The Simpsons Movie (2007): When Homer Simpson stands up to let the other audience members know just how terrible the movie they’re watching is, we can clearly see which other seats the characters have selected. However, when Homer stands up, it looks like everyone has switched places.

13. Toy Story (1995): When Woody is on the hunt to free his friend Buzz before he can be ripped into pieces or blown up, the clock behind him is clearly visible—it’s about 3:10 Minutes later, when the clock is visible again, it has changed times from 3:10 p.m. to 10 a.m. Maybe time flies for toys?

14. Planet 51 (2009): This particular “no parking” sign first appears on the side of the road. There’s nothing too weird about that, right? What is weird is when the sign moves further down the street in the next shot.

15. Toy Story 2 (1999): During one scene, Hamm and Rex are watching TV, which Hamm turns off with a remote control. However, when the camera cuts to look at the TV, there is no reflection of Hamm or of Rex!

16. Shrek 2 (2004): When Puss in Boots leaps and leaves his hat and boots behind on the ground below him, they are in the distance. However, when Puss leaps back down into them, the pile of clothing has moved forward to meet him.

17. Tangled (2010): Moments before Flynn finally cuts off all of Rapunzel’s hair, she holds his hand to her face, and it’s clear that his arms are in shackles. But in the next moment, the shackles seem to disappear by magic — though neither of them acknowledges it.

18. Beauty and The Beast (1991): Belle’s apron disappears and reappears without any explanation countless times throughout the film. There may be a story-based explanation, but there’s also a more logical explanation: it’s a silly little mistake, plain and simple.

19. Ice Age (2002): At the very beginning of the movie, Scrat the squirrel gets stuck between two mammoth glaciers. He is actually supposed to be caught at the base of the two chunks of ice, yet moments later, he pops out of the top of the glaciers. Either that squirrel is covered in butter, or the animators made a glacier-sized boo-boo!

Nearly every movie, be it amazing or terrible, contains at least one mistake. However, they go pretty much unnoticed in bigger movies just because the audience is so engaged with what’s going on.  As it turns out, animated films aren’t the only ones that make mistakes…

1. The Dark Knight, starring Christian Bale as Batman and Heath Ledger as The Joker, was a critically acclaimed movie with a cult following, though it would seem that one of the journalists at The Gotham Times might have trouble with spelling and grammar. Can you spot the mistake?

2. In The Usual Suspects, moments before they rob the police car, a Boeing 747 with four engines can be spotted in the landing shots. But when the plane is shown from behind, its only got two engines and fewer main landing gears, making it more likely to be a Boeing 767.

3. Forrest Gump, the lovable 90’s movie starring Tom Hanks was an absolute hit, though it did hide a few mistakes of its own. In the film, Forrest gets a letter in the post from Apple. The letter itself though appears to be way ahead of its time as it contains Apple’s rainbow logo, which was created in 1976, long after the said events took place.

4. In Gladiator, there is an epic scene depicting the intense “Battle of Carthage” in the Colosseum, and one of the chariots is turned over. However, once the dust settles, you can see a gas cylinder in the back of the chariot.

5. American Sniper got mixed reviews when it came out, though one scene was driving everybody crazy. That’s right. The plastic baby. After Chris (Bradley Cooper) feeds his baby daughter, it becomes very clear that the baby he’s holding is in fact made entirely of plastic. Look closely and you’ll see—that’s not a real infant, but an unoriginal Christmas gift.

6. Gone With The Wind, the timeless classic still very much enjoyed today, happens to contain a few very visible mistakes as well. In one scene, Ashley is brought back wounded from the raid where Scarlett’s husband Mr Kennedy was killed. Melanie grabs a gas lamp to follow the man carrying Ashley to the bedroom… where you can see an electrical cord hanging down from it.

7. Tim Robbins and Morgan Freeman were both praised for their roles in the iconic Shawshank Redemption, where the characters plot a prison break through a hole they dug themselves and covered it with a poster of the film One Million Years B.C. However, this movie only came out after the characters escaped prison.

8. When a gun is about to go off in Alfred Hitchcock’s renowned 1959 film, North by Northwest, a child has his fingers in his ears before shots are even fired. Maybe this child is psychic!

9. In The Wizard of Oz when Dorothy and Scarecrow are fighting trees, Scarecrow gets hit by a bunch of apples. But if you quickly look down at Dorothy’s feet during the very next scene, you can see that she is wearing black shoes, as opposed to her red, ruby slippers.

10. When astronaut Mark Watney is presumed dead by his crew in The Martian, they have no choice but to leave him behind on Mars so they can escape a storm in time. In the scene where Mark is trying to fix his vehicle, there is actually a person walking around wearing a tank top in the background. Life on Mars is real after all!

11. Another Tarantino movie, another list of fresh mistakes. About to receive a life-saving shot of adrenaline in Pulp Fiction, Uma Thurman gets a red mark on her chest, which is where the needle must go. Once the shot was given, the red mark disappears.

12. Jack Sparrow, dressed like a 1960’s hippie sex symbol, is the hilarious protagonist of the Pirates of the Caribbean series. Though his character was always dressed to the nines, we’re not quite sure where he got his Adidas headpiece since they weren’t really around during this time…

13. Actor Laurie Goode says he was as shocked as anyone to see that George Lucas used this now infamous take. It is one of the most popular mistakes in the Star Wars film franchise: the head-banging Stormtrooper in A New Hope

14. In fact, the Star Wars franchise didn’t seem to have an eye for detail as the films are practically all filled with mistakes. People’s clothes regularly disappear and reappear, or just switch sides altogether. This scene, where Lando Calrissian wishes Han Solo luck before they each head off to the final battle, Empire Lando’s clothes magically flipped. 

15. While we’re on the subject of indecisive wardrobes, the German Feldwebel in Inglourious Basterds, who gets beaten to death with a baseball bat, has a badge over his left breast pocket that tends to be quite magical too.

16. Halloween, the spooky classic of the fall is set in a fictional town in the Midwest. The thing is, towns in the Midwest, fictional or not, don’t usually have palm trees. Bonus fact: though set in Illinois, all of the cars also have California license plates.

17. Despite New York City being home to Spiderman when he fights Sandman, you can clearly see the Cleveland Terminal Tower in the background… as he balances on the Chicago L tracks.

18. When the T-1000 is driving the truck in Terminator 2, he appears to drive off a bridge as the windshield comes off. However, in the next scene, the windshield is back on. Is the truck a Terminator as well… ?

19. We can all admit that the stunts in Top Gun were incredible, but not at all realistic. It’s too bad that in the real world, if Maverick and Goose flew their planes that close together (with one upside down), the wings would likely crash into each other and a deadly collision would quickly follow.

20. And finally, during the final battle at the end of The Avengers, Captain America’s costume gets a tear near the waist. In the next shot, however, it’s apparently fixed itself. Pretty cool skills, superhero outfit!