Dogs and introverts are bffs. Depending upon your ability to exercise and groom the dog, the options are endless.
If you’re looking for a lazy couch potato to stay inside with you, then you’d want a greyhound, mastiff, Great Dane, pug, or English bulldog. But dogs that require the utmost amount of exercise can still be a great one on one companion, as long as you can dedicate time outdoors with them.
Some dogs can develop aggression towards others if they are not socialized properly, however, and should not be isolated.