During the "Cool Yer Ed" mission, right after Ed lifts and throws the 3 squirrels into the house, we see Sarah and Jimmy running out as well as the 3 squirrels. But, when the Eds enter the house, there is another squirrel inside that wasn't lifted and thrown by Ed.
In "Ed marks the spot" The eds find the left bottom piece of the map which only shows part of the map and nothing else. When the map is complete the same piece has the name of the 3 kankers, which wasn't there before.