Continuity mistake: After being tossed across the building by the gorilla, Eddie is stuck between bars with the arms being positioned differently between shots (right arm down/right arm up in the front view). (00:53:00)
Continuity mistake: Veeko screams in Norby's face when he touches the hand pounded by the gorilla; Norby has both hands in front of his mouth as reaction, but they disappear in the reverse shot. (00:48:50)
Continuity mistake: Baby Bink crawls out of the monkey building with his shoes unlaced, but they tie themselves up perfectly off-camera for the next scene. (00:56:30)
Continuity mistake: When Veeko spits his fingernails in front of the TV, Joe Mantegna and Brian Haley barely keep any continuity between shots (Haley's hand is turned with the palm up or down, Mantegna's pen hand is at different heights). (00:24:00)
Continuity mistake: Picking up clothes to dress up Baby Bink for the shoot, the mom asks "Won't that look like we're trying to match his eyes?" The baby is 'reading' the book with the right page lifted, while it was flat when the sentence began. (00:06:45)
Continuity mistake: Ronnie Lee drops the microphone and the bad guys notice the baby getting in frame; they turn around twice across two shots, in the second of which Joe Mantegna has his right hand up, while he had both arms down in the first. (00:37:50)
Continuity mistake: The couple is reading newspapers at the breakfast table. When she replies to him that Old Willy hasn't had a picture in it in 20 years, the top of the newspaper is visible, but in the next shot the paper is folded. (00:04:15)
Continuity mistake: Baby Bink is making his way inside the department store after getting pushed by the revolving door. POV shots have him walk on a decorated portion of the floor, but in the side views he keeps creeping on plain tiles. (00:34:40)
Continuity mistake: In the sequence when Baby Bink crawls off bed, Joe Pantoliano is resting on pillows positioned differently depending on the camera angle (the back pillow is either slumped low or propped higher). (00:23:25)
Continuity mistake: The pseudo-UPS guy has a hand truck he leaves by the elevator, but when the baby is crawling with the camera inside the elevator cabin, the cart is by the door of the old bat instead. (00:28:05)
Continuity mistake: A pigeon coos outside the window when Baby Boo is at page 10 of the book. The baby actor turns a few pages bunched together, but in close-up he goes perfectly from 9-10 to 11-12. (00:23:00)
Continuity mistake: As Veeko tests the milk's temperature on Joe Pantoliano's bald head, the baby's hand position is out of continuity in the close-up compared to the shots before and after (off/on chest). (01:16:50)
Continuity mistake: Norby brings the baby to the bedroom as per Eddie's orders. We see him walk past the door holding a plush toy in his hand. When we see him in the room, the toy is under his armpit. (00:17:45)
Continuity mistake: In the overhead shot of the baby in the middle of the road in front of the zoo, the road is lit evenly, while in the shot just before you could see half a lane being in full sunlight. (00:42:55)
Continuity mistake: The three kidnappers run after the baby who got into the zoo; they jump over the shrub between two benches, but the leftmost bench is occupied by a lady who disappears between shots. (00:44:20)
Continuity mistake: When the nanny leaves the room, Joe Mantegna is holding the book in his left and pointing with his right hand, only to be shown holding the book in both hands in the following shot. (00:13:10)
Continuity mistake: The two associates sit Eddie on the bench at the bus stop; the mess all over Joe Mantegna's hair (in particular the green goo on his forehead) changes between shots. (00:29:35)
Continuity mistake: The first time we see Bink crawling out of the big lady's bag, in frame you can see Veeko's legs, feet up, but he has not been knocked out yet. (00:33:40)
Continuity mistake: Veeko spits his thumbnail in the same shot as he bites it, but then is still chewing it, and spitting it (with a sound as it 'lands'!) later. (00:24:15)
Answer: It might have taken a while for them to find the keys to the crane as well as figuring out how to operate it. Once they did, they could get him down.