As nouns the difference between segway and dog

is that segway is a motorised personal vehicle having two wheels on one axle that balances itself using gyroscopes and tilt sensors while dog is a mammal, Canis lupus familiaris, that has been domesticated for thousands of years, of highly variable appearance due to human breeding.

As verbs the difference between segway and dog

is that segway is to travel by Segway while dog is to pursue with the intent to catch.

As an acronym DOG is

digital on-screen graphic.