Many script details emphasize the point that Tiger is supposed to be a Persian cat, describing his recessed nose, his proud lineage, and talking with a Persian accent. Yet, the animated cat is clearly Siamese in design.
When Verne first left the group to cross the hedge, he came out in a backyard. However, when he returned to the forest, he entered the hedge from a road, but ended up in the same place he left from, in front of the group.
RJ caught the grappling hook on a root and left the hook there after pulling himself up. Later, the root disappeared, and although RJ never returned for the hook, but left for the town right away, he still had the hook and used it several times.
When Verne is trying to return the food to "its rightful
owners" and pushes RJ into the ground, there are no toys near. Yet, in the following scene Verne appears, the two toys appear 2 inches from his feet.
When the animals are in the Verminator's truck, RJ tries to enter through the driver's side window, which is closed. Yet, moments later, when trying to escape Vincent, RJ jumps in the broken passenger side in, and is tossed out the now open driver's side window, even though nobody had opened it.
When RJ opens the bag of chips, it creates a large puffy cheese cloud that can be seen from space, like around Seattle. However, when the Depelter Turbo activates, a beam shoots out into space, but it comes from somewhere near Chicago.
When RJ first sees Vincent's cave, it's atop a sheer, vertical cliff (so sheer he can't climb it and has to use the fishing pole to gain entrance). However, moments later, when the wagon of food gets bumped out of the cave, it bounces down a more sloped hill with lots of ledges and rocks.
Stella and Tiger get into the house, even though they didn't have Tiger's collar to unlock the cat door. This is because the collar was left by the cat door to keep it unlocked while the animals sent the food out through it.