I have a 4 year old male staffy. We got a 6 week old female staffy puppy yesterday and when introducing them to each other the males hair stood up. He was very protective and this got better after about 10 minutes. Now when ever I take the puppy outside to do her thing the male is constantly standing over her and pushing her around. He is also showing teeth at the little one and did growl twice. When the puppy is sleeping the male leaves her alone and follows us through the house as he used to do. But when the puppy is awake stolling around he pushes her around licking her ears and smelling her the whole time. She as being a puppy nips at his throat and lips and then he gets upset. Is it wise to punish him when ever he growls or snap at her?
I separated them today while at work and will keep on doing this when we are not home till they have accepted each other. I understand he is showing her his dominance but for how long can this go on?

Is this anything to be worried about?

The male is a very friendly dog and get on well with our 10 month old daughter and other people.
Does anyone have any good ideas or tips how to make this less stressfull for the male and female dogs?

Thanks in advance!

> separated them today while at work and will keep on doing this when we are not home till they have accepted each other.

Always separate when unsupervised, even if it does appear that they've accepted each other.  Seriously.

6 weeks seems young for a pup to be away from mum, but that's just based on my own experiences.

Supervise supervise supervise would be my advice.  But also try to understand your males body language.  Let him have his space away from pup, but also make sure he's getting equal amounts of your attention too.
My own Stafford bitch was just over 4 years old when I introduced our male pup into the home.  She wasn't keen at first, and actually ran away from him.  
I have taught her the command 'gentle' and if I thought she had had enough of pup pestering her, then I'd tell her to be gentle but also let her have her own space.  When pup slept I made sure the bitch got lots of attention and playtime.
I'm just trying to recap it all through my mind, as it was over 3 years ago now, so I hope it's been helpful.
What I do remember is though, that it took a good amount of time for everyone to find their place and settle down.

i went through the same thing and it is very important for you to not let the pup jump on your boy until they get more used to it.
make sure your boy can always get way from the pup and never leave them alone together. your pup needs to learn some manners so she knows not to treat your boy as a toy.
i found putting the pup on a lead when we were in the same room helped, so she could get to the other dog but not jump on him. also use toys and treats to distract her and make yourself more fun to play with.
there's no quick fix you just have to give them time, this could take a couple of weeks or a lot longer.
i wouldn't let them outside together for a while, so your girl can play and toilet in a relaxed way and your boy doesn't get upset about her moving around.
try not to get angry with your boy but use distraction with treats etc if he looks like getting a bit silly and always reward his good behaviour around the pup.
i would use stair gates to give them time to get used together. this way they can see and sniff but not get upset.
a lot of dogs don't like puppies as their bouncy and nip a lot so it will take a while for things to settle down. your have to be patient and take things very slowly forcing them to be together will not help at all. if your boy wants to leave the room when the pups around then let him. at the moment he is unsure who this stranger is in his house and by the sounds of his behaviour, which was just like my dog he is very nervous and not sure whether to play or get aggressive. this will calm down in time but just make sure your around them all the time.
good luck with your new girl,i'm sure things will be fine. 

Hi Tracey, Thanks for the advice. I will definately keep them separated when we are not home.
6 weeks is a bit young but the owners did not want to have the puppies anymore so we had to take them. The mom was pushing them away and did not want anything to do with them. My male was only 5 weeks when we got him and oh boy did we have a difficult 3 weeks in the beginning! LOL!
Must say the puppy's first night went very well. She slept in her crate next to our bed and the male slept next to her crate on his duvet. She did not even made a noise until 04:30 this morning when she wanted to play and go outside to wee.........

Hi Bear, Thanks as well for the tips. Did not actually think of taking the girl out alone to do her thing because last night and this morning the male was bothering her the whole time when she wanted to do her thing. Thanks will give it a try. Luckily me and the wife is on leave for the next 2 weeks and can spend alot of time with them.

Ive had to introduce a pup staff to a older staff and like everyone else has said supervison and time away from each other is key.
Never leave 2 staffords alone unless you know its safe to do so while your home BUT NEVER when your out, I have heard too many stories of staffs left alone in the same area together and problems happening, just saves accidents to keep them apart when your not there what ever age!
Letting your girl go alone outside is very important also so she learns to cope with new things on her own and not rely on your boy being there, this goes for walks too, slowly introduce them on walks together but get your pup trained to heel first and get her used to road noises without him or you may find shes a different dog when he isnt on walks with her as she relys in him for security!

I found having a baby gate to seperate the 2 was very good as they could still smell and nuzzle each other but they could walk away if they wanted too and have some peace in different rooms!
Take it at your boys pace as you dont want him to resent the pup for being overbearing and mussling into his comfy lifestyle and also make sure you give your boy plenty of extra love so he knows he isnt being replaced :-)

Getting 2 staffords was the best idea we ever had, they can keep up with each other and love a 'boisterous' play or 'mad moment together' which most other breeds find too OTT! and the companionship between them is something to be admired :-)
Good luck!!!! :-)

> Is it wise to punish him when ever he growls or snap at her?

NO. He is simply showing he is not yet happy about haveing a nippy, strange puppy in his home, if you punish him it will only give a negative association and show him that this puppy is not a good thing. Give him time, but as others said, do not leave them unsupervised. It's best to reward any positive interactions from your male and ignore/divert/pre-emp & avoid any 'negative' behaviour from him.

When I brough my pup home (male mastiff) I already had an old male (lab cross). The pup was kept on a lead while around the old dog to start with, so as not to overwhealm him. Once hte oldie became more used to pup, the lead came off  and they had supervised play sessions. After more time, when they were used to each other, I could leave them alone together (but they were not staffies).

Please don't forget the seperation of these dogs from your baby daughter. She's could be at great risk if they kick off. Far more important that any dog consideration imo.