Factual error: Gorillas are almost exclusively herbivores. They have been observed eating small insects and grubs but nothing larger. So why does Isabelle eat a rat at the beginning of the film? The serum may have turned her into a crazed killer, as it does with Sebastian, but it hasn't changed the structure of her teeth and palate, biochemistry of her digestive system and so on, all of which would be required. She might kill or torture the rat, but she'd never eat it.
Suggested correction: Gorillas do sometimes eat meat, especially small animals. Also, Isabelle may not be getting fed the right foods resorting to her eating a rat. Humans will resort to drinking their own urine without access to water for a period of time, it's not far fetched that a gorilla will eat something that will be harmful to its body in a similar circumstance.
Gorillas do NOT eat rats. Inventing Deus Ex Machina explanations for a factual error (Isabelle was underfed so she was desperate for food!) does not invalidate the error. The posting needs a little more detail but is absolutely correct.
But she didn't eat it regardless so everyone is making the same mistake (she bit it, perhaps from the rage side effect?).
Nonsense. She picks up the rat, bites it in half, and swallows it. If she spat it out, we'd see it. As we see later in the film, anything ingested by an invisible creature instantly becomes invisible, so why don't we see a bloodied half rat splatter on the cage floor? Because Isabelle chewed it up and swallowed it.
Wild gorillas have been documented (on camera) feeding on freshly-killed monkeys. Like chimpanzees and humans, gorillas are omnivores and are perfectly capable of eating and digesting raw meat.
I think speculation about her eating it because she's not fed a proper diet isn't valid. But it's plausible the serum made her vicious where she ate the rat. To say her teeth and digestive system are the reason why she wouldn't/couldn't eat the rat isn't valid either. My dog once ate my sock despite not having the teeth or digestive system required to eat socks.
Suggested correction: This entry is wrong. Gorillas can, and do eat meat, so the actions of the gorilla are believable. From feedingnature.com: "Gorillas will sometimes eat meat. They can catch small animals such as mice, rats, or birds and will eat these animals if they lack protein in their diet. The silverback gorilla has been known to eat meat and might even attack and eat other primates." Even if you dispute this fact, most people would believe that a gorilla is certainly capable of eating a rat.
Continuity mistake: During one scene in Camryn's Halloween birthday party (where she is wearing a silver mask), it is actually Tia playing this role instead of Tamera.
Audio problem: After the aeroplane crashed, a dinosaur stepped over it and the windows shattered making the typical sound of made-of-glass things when broken. They are made of plexiglass (a sort of fibrous plastic).
Continuity mistake: Throughout the entire film the tattoo on George Clooney's neck moves position and changes shape.
Revealing mistake: In one shot when the boat is pulling away from the waterfall, you can clearly see that the shot is the same one they used earlier in the movie. The water from the waterfall now is going up the cliff! They have just put it in reverse.
Continuity mistake: When they finally arrive at the bottom of the sewer, Eddie's bandage is on a different cheek. (01:59:00)
Continuity mistake: If you look carefully at the monster (Frankenstein) you will see that his face is different in the ending scenes. The reason is, during the movie you see the monster take the woman doctor and throw her out the laboratory window. You then see the monster kind of stumble, which he really did and broke his ankle. So in the final scenes they replaced Lon Chaney Jr. as wolfman with a stuntman, and Lon Chaney Jr. finished the movie as the monster.
Factual error: Fitch, who professes qualifications in biology, genetics and biochemistry, says that they made Sil female because she's a natural predator and so she'd be more docile. He should retake his finals. In every single species of predator on earth - every single one - the females are the hunters, aggressors and killers. The males may be socially dominant but they are the 'docile' ones. There are no exceptions - and no human DNA was used to create Sil - they used synthetic DNA based on the instructions transmitted to them.
Suggested correction: They never said Sil was a natural predator when they created her. She was half human and half alien and it was their belief that human females are more docile (i.e. more motherly, more gentle, more empathetic, and less aggressive than human males). Although the reply to "more docile and controllable" was "you guys don't get out much", meaning that girls aren't that docile and controllable.
Visible crew/equipment: At the end when Sidney's dad falls out of the closet, if you look closely you can see the hands of a crewmember who was in there too, pushing items out after him. (01:42:40)
Continuity mistake: In the British Museum, when Rick and Ardeth are saving Evie, Rick gives her a .45 pistol and they start to shoot the guards, her pistol fires once and the slide locks back meaning the pistol had no ammo, but she keeps firing as if the magazine was still full. (00:39:47)
Other mistake: In the slaughterhouse scene, after Harrigan has injured the Predator with his shotgun and Keyes reappears, the Predator throws its disc, and severs Keyes in half at the waist. We see his legs flop to the ground, and blood pour from above, but his upper half (torso, backpack and weaponry) mysteriously remain hovering out of sight. (01:21:50)
Character mistake: When Ripley interfaces with Mother for the first time and sees the special order, an instruction reads as "Insure return of organism" rather than "Ensure return."
Continuity mistake: When the Senator is about to be sacrificed, the cloth on her mouth immediately disappears for a split second. (01:29:35)
Factual error: During the opening scene in 1988, a silver TV from the late 90's/early 00's is in the living room/dining room area. (00:02:10)
Continuity mistake: He cuts a hole in her pants for insemination. When in the car moments before fighting the dog there is no hole.
Other mistake: On the back cover of Scream 3 in the Scream trilogy on DVD, the town of the original killings is referred to as Greensboro twice. The correct name of the town is Woodsboro, of course.
Factual error: This movie states that it is during the year 1973, yet in the beginning of the movie when they are driving in the van they are listening to "Sweet Home Alabama" by Lynyrd Skynyrd. This song was not released publicly until 1974. (00:03:10)
Character mistake: The last time Doc tries the defibrillator on Norris, he uses it on the abdomen instead of on the chest.
Other mistake: At the carnival, you can see an African-American man staring at the camera for a while. I am unsure if he is a crew-member watching over the scene, or if he is just an extra trying to get onscreen.
Suggested correction: He isn't staring at the camera. He's glancing over at Peyton and Julie as they are joyously dancing upon exiting the ferris wheel.
Continuity mistake: When Annie and Laurie leave the hardware store to go to their babysitting jobs it is broad daylight. When they reach the houses apparently just a few blocks away, it is already dark.