Is AUTHOR wrong in the post ? POST : Ob= older brother (not related) 

M=mom

Mb=moms boyfriend

(Backstory) ob got out of jail after 1 year for a car crash and just recently got out and works at subway (this is important later on) 

Ob at the time of writing this is 18 years old and started to live with us again in a small room in our house. When he got out he seemed chill and better before he went away, but after a month or so he went back to his old ways of stealing candy, running from the police etc...  (Nothing to bad). But it got worse over the last few months, Our dog Baya gave birth to 15 baby puppies and we plan on keeping one and giving another to my grandma, lately he's been referring to his friends as his dogs (he  contributed nothing towards raising them) and says he plans on selling all of my puppies. Everyone in the house disagrees with him but he won't listen, every so often hell try (and sometimes succeds) at taking a few to his friends house. Lately he's been telling us that he'll "find them homes" But the problem is they're still going and not ready to be given away yet. Our family has gotten fed up with his shit and whe he's gone my siblings (and sometimes parents) will consult with each other about what we should do about him. We've constantly told him that if he doesn't stop well kick him out and hell be homeless and won't be able to support himself (hence why I said he works at subway). We all eventually decided we're going to get rid of him in about 2-4 months. When he heard about this he started rambling saying stuff like "I have other places I could live" And "you guys are assholes".we do feel bad about this but we also know he'll go right back to being his former self. 

So please tell me redditors, are we the assholes? 

(If you have any questions please ask I'll try to respond as truthfully as I can) 