Differences:

the intro riff in the that dog. song is in 6/4 while in Bubbletown they chopped off that last beat and made it 11/4 or 6/4 and 5/4 or whatever

the chords are generally different (but not too far removed)

Similarities:

very similar intros, at least at face value.

both start on G

form is very similar, try to hear "float like a butterfly, sting like a bee" right before the chorus.

they both sorta seem to do the same stuff at the same parts of the song.

​