I have decided to move to be closer to my workplace. Currently I have a two bedroom house all to myself with a huge backyard. Monty has run of the place! I am looking at moving into a townhouse with another roommate who owns a dog already. Monty is well socialized and goes to daycare three times a week currently. He never has issues with other dogs EXCEPT when another dog approaches me. He can get pretty aggressive (no harm but definitely snarling and sometimes lunging) He especially does it if I am sitting down and another dog approaches. Now this usually happens when I go to the daycare (which is open concept) and is a little chaotic or when our crazy neighbor dog speeds toward me and knocks me down. Usually if it is a calm atmosphere it doesn't happen.
Do you think it is a good idea to even try and introduce him to this type of living situation? Can I train him to be less possessive of me in these situations? Any other tips?