Boxer behaviour problems

[BiscuitBeast]

I'm after any advice from boxer owners that might share or know something about why my boxer is so dominant and stressed around unfamiliar dogs.

Phoebe is 3 years old and a very loving, attentive fun pooch. My dh and I have had her since she was a pup and took her to socialisation and obedience classes. She's really obedient round the home and in terms of her breed she's really quite calm (90% of the time).

When she came into her first season the change in her behaviour around other dogs was quite staggering. She would chase dogs and totally ignore our shouting and recall to just stand over these poor dogs growling and sounding horrendous. We put it down to her hormones being off kilt and had her spayed immediately hoping things would improve.

They didn't.

Other than my close families spaniels who she has mixed with since we got her and a friends black lab (just met walking one day and Phoebe randomly bonded with) she reacts to every dog. By react i mean jumping/lunging towards a dog and making god awful sounds. In the boot of the car should a dog pass then she's up at the windows clawing and growling to get out. She completely zones out and focuses all her energy into hating the passing dog, it's as if you're not even there.

We have to keep her on a lead unless we are walking on fields far, far in the distance, one that we know other dogs rarely use.

I really can't understand why she is like she is and what changed for her. I don't get it and it makes me sad that's she's missing out on fabulous walks in great parks where there are so many dogs to run round and socialise with. I know it's something myself and my dh have got wrong but neither of us know what!?

We've been to behavioural classes and taken on board some of their advice but i just wondered if there are any other boxer owners out there who have similar experience of this?

Yes, we have.

We took in a rescue male and female boxer about four years ago, we don't know what happened to them before but they do not like other dogs!.

The male dog would leap about on his lead and do this god awful yodelling noise.
If we let him off his lead he would just run and run after something on the horizon.

I took him to boxer only training when we first got him (he was about 18mth old) and he must have been so overawed to be in a room with 30+ other boxers he behaved quite reasonably there.

Roll on four years later - Both DH and I walk the dogs together, they will walk past another dog whilst on a lead providing the other dog just does the same, if the other dog barks or growl our male will see it as an invitation, although he sits immediately if DH shouts at him.
DH makes him sit, makes him look him in the face and says NO! and doesn't walk on till boxer is calm.

We don't take them out in the car much as the female boxer is car sick, but on the occassions they have been in the car they just look out the window and don't react to other dogs they see.

We still don't let them off the lead on a country walk.

They are absolutely perfectly well behaved at home, super friendly with visitors and will play well in the garden with nieces and nephews etc. They behave well with the rabbit and the cats, have excellent manners around food and are brilliant cuddlers. Every visitor to our house (relatives, workmen, postman, etc) has commented on how well behaved they are.

We take them for long walks, play fetch and football in the garden and occassionally set an obstacle course up for them.

So, I don't have much advice for you but totally understand where you're coming from, how can they be so perfect at home and then show themselves (and you) up when they see another dog?