Barking mad

[Safzola]

Im having loads of problems with zolas barking she barks at everyone who walks past the window but she also launches at the window and nearly goes thru. my neigbour even said one day she will come thru she even sits on the settee luckn out the window barking at nothing..... it becomes a nightmare as we have 2 little boys under the age of 3. she is not so bad when its just my husband but soon as i come in ...... MY GOD.....what a change she starts her barking..... we need yr help on this please zolas mam ursula