At the end when the squirrel gives up, he places the coconut at the front of the tray with the remaining coconuts but as he walks away, first the sound of a coconut falling over other coconuts is heard and then we see the coconut falling down over the over the other coconuts. That would not happen as it was shown that he placed the coconut at the front.
When the squirrel gets driven into the ground by the coconut/bowling ball his whiskers disappear for a brief moment.
The squirrel is shown with 4 whiskers and other times he has 6 whiskers.