- The dog appears to belong to Mister Rover as he is the only toon in Tomorrow City (aside from captured Gremlins and Petetronic). He also states that he misses his dog, most likely in reference to the Robot Dog. However, a certain concept art piece shows Ortensia walking what looks to be the dog, but may be something else or another kind of dog.
- The dog is likely an animatronic Pluto.
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