can anyone help me please i have a 17month old staffy and recently got a bitch who is 12weeks.i leave them out the back yard when in work but when i come home and let the 2 of them into the house my 17month old bites down on the young ones ear and drags her around by the scruff all over the kitchen and then pins her down and gets her by the throat any suggestions as to whats going on or why he is doing this

please help
paul

It seems that you have a dominance situation on your hands. It could be playful, but that is something that would have to be determined in person. I worry about leaving them alone together all day. If the older dog is so dominant that it's willing to behave this way in front of you... it's probably worse when you are not around. Obtaining dogs at different times results in this quite often, it's partially a jealousy thing. However, normally spending a lot of time with both dogs equally can put an end to it. When the dog acts this way around you, put a stop to it immediately. In most cases the other dog should stop the behavior when it gets out of hand, but it doesn't seem like your female is doing that herself.

Don't just get him in trouble for being aggressive. Stop the behaviour by saying no firmly, then petting and playing with both dogs for a minute or two. You don't want to associate trouble with the new dog. If it continues, seek "couples" training from a professional in person a trainer can help build a friendly bond between the dogs.

is he not neutered? that is a huge problem if not done.

it is very dangerous to let dogs outside unsupervised - they frequently get stolen to be used as bait or sold to research. kids torment them. neighbors poison them