Aggresive Behaviour from 2 yo Maltese x

Question
Hi,

We have a bichon/maltese cross who has progressively become worse with agression since we have had her. She was a very happy, easy going puppy, always happy (we bought her as company for your 7yo maltese shih tzu and they love each other), however about 12 months ago she started snapping at hubby and I whenever she was in bed and we went near her. She and the other dog sleep inside, under our beds and they have free run of the house.  Since that time, she has become more agressive more often, and last night it became much worse, my husband tried to bath her, and pulled her bed out from under ours, and she snapped at him and growled very aggresively. He couldn't touch her, and she would not let him near her for the rest of the night, and even this morning she was snappy with him when he went to pat her (he did give her a smack last night for snapping, she may not have forgiven him!).  We had a baby boy 9 months ago, and she has never shown any signs of aggresion towards him, but she doesn't hang around him like our other dog who loves him, i am worried that he will try to grab her when she is sleeping or eating, and she will bit him, and its a real concern.. any thoughts on how we can fix this?

Answer
Hi Megan;
You need to get the dog to "Obedience" class as soon as possible!
In the meantime, you will need to use a Crate, and give the dog a time out if she does this, put her in for at least a 30-40 minute interval.
So, this will give her the idea she is not in "Charge"!
If you want to live in a home environment, that is fine...but there are rules! Safety first, and yes, she will bite your baby, and that will be a true tragedy...so, you must take charge.
Class is a must, and a crate is also required to get this problem nipped in the bud so to speak!
Be sure that you are the one to make the house rules, and implement them accordingly!
Best wishes, and let me know how you do.
Regards,
Melissa