Dog bite split nostril open 2.5 months ago. It's now uneven. Will it go back to normal or should I consider surgery? (photo)

Seek out a Board Certified Facial Plastic Surgeon with vast experience dealing with traumatic injuries to the nose.  Your photos help us get a better idea of the asymmetry that you are concerned about, but the most important aspect of your situation is time !!   If you start to develop a raised painful scar in the area, you may be developing a hypertrophic or keloid scar which may need to be addressed  by your chosen surgeon sooner rather than later.  If there are no aspects of your healing suggesting a keloid scar, you need to let the area heal for at least 12 to 18 months before a careful history and physical examination performed by an expert  will  reveal whether anything needs to be done to address your concerns. Happy healing 

Thank you for your question.
I would advise you to wait at this time as the problem does not appear to be too bad. You should also find a Board Certified Plastic Surgeon in your area and get his opinion. All The Best !

Sorry about the dog bite. From the photo (poor quality image though) it does not appear too bad. At this time, with a few months of healing, the best and recommended option is watchful waiting. Do not do anything at this time. It take about 12-15 month for the wound to mature. Most likely it will greatly improve and no future treatment would be needed. If you are concerned, please see a facial plastic surgeon to be evaluated. Don't treat yourself with only internet medical treatment! Be patient!

Thank you for the question and pictures.  Based on the information you provided, I think that you should give this time.  Your nose does not "look" infected, though it does look like you have some swelling that is yet to resolve.  Giving this another 6 months to see how the swelling responds to time is what I would recommend.  Good luck!

The photo is unclear.  Based on the information you have shared, I would wait a few months until the scars are mature, and hopefully surgery will not be needed.