I've got this delightful neighbour who has one ds around 2/3 years old.
Now I appreciate that everyone is entitled to parent in their own way and i hate gettin involved in other ppls business etc but sometimes it's necessary ( I mean we r talking about a child) ...Her behaviour makes my blood boil..
Firstly, she is always screaming at the kid, not just normal tellin off I mean callin him a c* , tellin him to f off etc at the top of her lungs, day in day out - so loud I can hear every word through my walls (and he's only little) 
She also smokes weed - in and around her house and I've actually been walking past before and she's been on the doorstep with him on her lap while she's smoking a joint!!
She's forever arguing with her latest boyfriend /playing very loud music until all hours most nights even though she has a baby in the house- police are always getting called there for whatever reason
The first time I ever met her ws when she knocked at mine with her ds askin if I had a cigarette- when I said no, she asked me to hold him for a sec while she knocked at the other neighbours houses
and I kid u not
She did not come bk for about 4 hours!!!!! She had no idea who I was, and she just left her kid with me without even askin if it was ok - when she finally came bk she was drunk and said she got chattin to a neighbour and had "a few brandys" - no apologies nothin 
Then again tonight the police were at hers cos she left her ds in the house & ws outside arguin with her bf and she managed to lock herself out! And ds ws inside scared and screaming cos he ws on his own!!!!
What the actual fuck!?? Should I just call them,? I am really concerned about this child, I can't just stand back and watch him be abused and treated this way!