Continuity mistake: After the gang all get their protoplasm back, we see Fred holding Daphne's purple bag and he holds it up chest high and looks at it strangely. Then when it cuts Fred is standing normally with his hands by his side. (00:56:00)
Continuity mistake: When we see the very first close shot of Emile Mondavarious' desk, the black lampshade on the desk is very close to the books that stand on his desk. Yet when we see the desk in the background, when Emile is talking to Scooby, the lamp has moved much farther away, and in the space that it has moved away, a figurine has appeared too. (00:57:45)
Continuity mistake: When Daphne is fighting on the roof with the wrestler, you can see the lever in the background which Daphne is supposed to pull. Above the lever is a sign which says "CAUTION - Clear vents before opening." Throughout the fighting scene the branches/vines that are beside the sign constantly go from hanging over the sign, to beside the sign. (01:09:00)
Revealing mistake: When Daphne and the wrestler are fighting on the roof, Daphne slams the door into the wrestler and the wrestler's head smashes through the door window. The wrestler then grabs Daphne's arm, and smashes his arm sideways into the doorframe. If you look closely, you may have to watch a few times, you can clearly see the pre-cut line that makes the doorframe easier for him to smash. (01:09:40)
Continuity mistake: At the end when Mary Jane grabs Scooby and Shaggy by the neck and holds them off their feet, she grabs Shaggy with her left hand, in the next shot it is her right hand holding Shaggy's neck (you can see her turqouise bracelet) then back to her left hand. (01:09:50)
Continuity mistake: In the scene where the gang quit, Fred walks to a news van. The van has it's door closed and it's windows closed. But when it zooms out, the door is open and the windows are especially open.
Revealing mistake: When the gang and Mary Jane are being chased down the corridor and jump out of the window, you can see that it isn't Daphne that hits the awning. It's a man in a dress.
Continuity mistake: When Scooby-Doo falls down the hole to the cavern below Shaggy follows him a few seconds later. When Shaggy hits the sand below he has to roll when he hits the ground. In doing so, his back and knees are covered in what appear to be thick sand deposits. When he stands up in the next shot and turns around he has no sand on his knees or on his back. He has not made an effort to brush his pants or shirt off.
Continuity mistake: When Shaggy and Scooby are being chase by monster Fred and the Sugar Ray band, they enter the shed and Fred crashes his hand through the window and there is a large shard of glass under is arm, the shot changes and the shard is gone. Back to original shot and the shard is back.
Continuity mistake: When Daphne jumps out of the pyramid as it is closing, the distance she has jumped changes between shots, and technically she should have been trapped halfway.
Continuity mistake: At the airport before their flight to Spooky Island, Daphne wears a pink minidress and pink boots. This changes to black trousers. In the next scene in the plane, she wears her boots again.
Continuity mistake: In the final scene between Shaggy and Scooby, when they are gorging themselves and eating hot peppers, when the camera switches to the shot of only Scooby, the girl at the table behind him keeps appearing and disappearing.
Revealing mistake: When Shaggy, Scooby and Mary Jane have escaped the monsters using the quad bikes, they land in a small pit and Scooby starts barking at Mary Jane. When Shaggy says, "Scooby-Doo like what are you doin' man", Shaggy is talking to the floor - he's not looking anywhere near the CGI Scooby.
Continuity mistake: When the monsters all come out in the hotel at Spooky Island, Scooby hides under the table with Fred standing in front of him. The camera angle changes from a close up of the table to a long shot looking at the whole scene. When looking at the long shot, Scooby-Doo is not under the table but when the camera cuts back Scooby-Doo is still there as if he hadn't moved.
Continuity mistake: When the gang are at the edge of the woods staring at the voodoo man, and Daphne says she can handle him and walks towards him. When she takes a step forward you can see a light purple bra under a dark purple dress. A few minutes later the dress is pulled back up and the bra is no longer visible.
Continuity mistake: In the beginning of the scene of the plane, there is no red light on top of the plane. But when Shaggy says "Bad Grandma! Don't eat the kitty!" on the roof is a little red light.
Revealing mistake: When the gang is chased out through the window, Scooby pushes them on a cart. During the shot, on the floor, you can see the tracks that the cart is travelling on.
Continuity mistake: In the very beginning of the scene where Daphne motions Scooby and Shaggy over and ends up giving them Scooby snacks, there is a low shot from behind Daphne as she walks into frame. She doesn't have her purse. But the next shot is from the front of her, and motions for Shaggy and Scooby with her purse.
Continuity mistake: At the beginning, as the gang splits up, Velma says, "I'm outta here." In the shot facing Daphne, Fred is walking to his red car in the background and gets close enough so he is turning left towards the driver's side door. Then when Shaggy says, "No, don't go.", in the overhead shot Fred is much farther away from his car.
Continuity mistake: When Fred and Velma unexpectedly meet at the airport watch out for a long haired blonde guy carrying a surfboard who passes Fred twice. He also appears again a few seconds later behind Velma when she comments about how she's been working for NASA (he's wearing the same clothes but without the sunglasses or surfboard and is now reading a magazine). Then we see a frontal shot of Fred and Velma and he's now vanished.
Answer: There are some episodes where they show the factories where Scooby Snacks are manufactured, so they aren't just made for him. Scooby is shown to love them as a puppy, so it's possible the dog was named after the snacks because he loved them so much.
Sierra1 ★