getting a bitch spayed

does it calm them down as she is really over the top no1 can come in my house with out her going mad not aggressive just really hyper she just likes a real good fuss

I don't think there is any real evidence it helps

Its more medical than behavioural with a bitch. Testosterone is the loopy drive with males and even then castration isnt guaranteed to cure that. Females are generally more calmer and less driven than males but they do have an incredible passion for companionship and dogs like staffs especially love to show there love for you and they can be quite needy sometimes. Show them any attention and they will treat you like the long lost friend they havent met before.. its a breed trait and why they are loved so much.

ok thanks alot iv been told by a few dog owners when on a dog walk that getting them done calms them down but i always had my doubts

Spaying/neutering is more of a supplement for behaviour that should be used alongside an exercise and training plan, it won't train them for you. I noticed definite changes in my bitch after spay but she had been used as a breeding machine for years before I took her in an her hormones were really out of whack.

As said no real concrete evidence, my Brothers Beagle was spayed before her 1st season and it doesn't seem to have calmed her down too much   

I don't know if there is any evidence of this having any effect on a dogs behaviour.