How to handle our dog??

Question
We have a 6 months old female dog(LEXI) She is a cross breed Pug/ Bichon Frise. We had her since she was 12 weeks old. She is getting a bit hard to handle. What did I do wrong??
She makes us feel as if we live in her house.... she is all over.... her toys are scatted around etc.
*She is either very quite or all of a sudden she gets ''crazy'' pulls my dress and will not let go.
*When friends come to the house she jumps on them, bites them (usually softly) and gets uncontrolable, friends stopped coming!!!
* When we open the main door to go out she runs out of the house (far!)and it is really difficult to get her back.
We take her out for a walk twice a day for about 30 -45 min each time.
*She plays in our back garden whenever she wants.
*We give her lots of love.
What can we do to calm her down??
Thanks in advance for you advice
Edit

Answer

Hi Edit,

You didn't say that your puppy was being aggressive in her behavior, so I'll assume she isn't.

Your puppy is acting like a normal healthy puppy, they're supposed to be bundles of boundless unbridled energy. Going "crazy" with a fit of energy is also part of normal puppy behavior. When this happens, give her an appropriate puppy toy, such as a Kong toy or Nylabone, and praise her when she's chewing it. Always reward the behavior you want in a dog.

For immediate calming down, it helps if you stand up and turn your back to the puppy, looking up at the ceiling. Don't look at your puppy or talk to her. Once she realizes that it's not getting your attention, she'll calm down. Also, you can get her some puzzle toys that tire her out mentally (very important) as well as physically. Try getting a puppy Kong (at PetSmart or Petco) and stuffing it with some peanut butter or treats. Your puppy will spend a lot of time licking at the toy and figuring out how to get treats out. You could also get a treat-dispensing ball, so your puppy rolls the ball around, trying to get all the treats out.

If she does jump on something unacceptable, say "OFF!" and reward her with a treat when she jumps off (only when four feet are on the ground!). You might have to physically lift her off while saying "OFF" the first few times.

Your puppy would probably benefit from going to a puppy "kindergarten" or obedience class. Learning to listen to you is important mental stimulation, and will help your puppy learn to be calmer, and you will learn how to control your pup.

Best of luck,
Patti