1yr old shepard and 10 week pup

Question
i have had year old dog german shepard (jed) who is quite well behaved well socialised and usually submisive to tother dogs in the park if play gets to over the top.
  But we have recently bought a 8 week old bith german shepard (kia) there have been a few snaps and grols from jed over food and toys but all in all its been ok play is mostly gentle and usually started by (kia).
  There has been a problem with snapping and sumtimes quite vicious attacks from (jed) whillst walking and running along side by side, down corridors doorways tight gaps etc also when i try to stroke or play with(kia). im sure this is his trying to be dominant over me and (kia) as he sometimes does it with other family members and will not move out of the way or through a door. How could i curb this behaviour and create some equaltiy between the two dogs now?? or is this simply because the bitch is a pup??
  i would appreciate any help or time you could give as i dont want either dog to suffer.
Yours thankfully

Answer
A lot of Jed's behavior could be because Kia is behaving rudely and needs to be reprimanded. However, some dogs are just not tolerant of puppies, and take their reprimands a little too 'over the top'. When Jed starts getting growly and snappy with the pup, it is your responsibility to step in and remove the puppy from the situation and put her, essentially, in a 'time-out' away from you and Jed (but still within sight, if possible) until she can calm down a bit. What you don't want to do is correct Jed for it, and then go and give Kia attention!


You need to start giving them individual time alone with you; put Kia in another room in a crate for a few hours each day while Jed is loose in the house with you. Take him outside and go for a walk, play a game of fetch, and/or do some obedience training during this time. Then come back in and either let Kia out to be with you and Jed, or put Jed away and spend some time with Kia before letting the two dogs be together.


Now, his behavior towards YOU in regards to blocking you when you try to go down the hall or through doorways needs to be stopped immediately. This is controlling behavior and, if ignored, can escalate. I would suggest hiring a trainer that can come to your house and help you work on respect, as well as helping with the issues between the two dogs.