When Joe asks the Kangaroo if it gets ball off of roofs in its natural habitats, close-captioning reads "rooves," but the proper spelling is "roofs."
In the Mailtime Segment, Joe tries to sing the Mailtime Song, but is interrupted by various animal noises. Afterwards, Mailbox has him receive his letter from a goose that's been hanging around the house.
When Joe is looking for the third clue, Joe goes behind the other outfits in the clothesline.
Also when the animals show Joe and the residents of the Blue's Clues house what they do, Joe gives out a quote like: "Great swimming, Platypus!", "Terrific tusks!", That's a beautiful house, I mean lodge, Beaver." and "Enjoy your snack, Giraffe." just to name a few.
The game board is seen in the bedroom from Geography.