So my fiance and I got this adorable little puppy a month ago so we were thinking with baby due in October we had time to train and they'd be best friends. We were lied to on her age and found out she was only six weeks from the vet. We tried to give her all the love and care she needed and for awhile she seemed to thrive. We have a cat and she seemed to like her though the cat didn't like the playful nips. Well last two weeks has been a downhill slide. She bites us not nips anymore, growls, no longer listens to any command she used to, she attacks the cat sometimes drawing blood, she was completely house trained and now she won't go outside, and last night as were trying to correct her aggressive behavior with toys to replace biting, treats and praise for good behavior, and the occasional muzzle hold if she chose to continue biting she ran off so we started talking and then ran back after awhile and bit me drawing blood. My fiancee said that was the final straw since our daughter can't be around that and we've tried everything. There is no health issues, she was at the vet last week and they said she's fine, we spend time with her, have a big yard, toys, treats, food that matches what her diet needs, fresh water, and I seriously already love this dog.... But I can't make excuses and I'm starting to be scared of her and I can't have my daughter around a dog I can't train and trust. We don't have money for a personal trainer and honestly I'm heartbroken I couldn't be enough for her... Im so torn on doing what's right for my daughter and fighting for my pet. Is there any advice anyone can give me? Please no hateful comments, I have so much guilt and sadness already. This dog was supposed to be our daughters best friend and our forever companion and I literally don't know how to handle myself right now..