Hi and welcome! Glad you‘ve found us, hopefully you‘ll be able tp pick up a few tips here to help you address some of your girl‘s issues. A lot of the behaviour you‘ve described is very typical cocker i.e.breed related which means you might have to accept that the best way forward is to manage it rather than make it a battle of wills.

Loose lead walking has been a constant topic on this forum since I joined 9 years ago, lots of people have tried lots of methods, I think you just have to see what works best for you and yours but it‘s a continuous process, they‘re active inquisitve dogs bred for searching out birds and I think it goes against their nature to amble along as a just a companion. It took me a long long time to wake up to that but once I finally did I started to feel a bit more relaxed about it!

. Leave and Drop are similar although we‘ve managed a reasonable result with lots of positive training and big rewards, Humphrey will happily give up some things but can get very possessive of others so its a matter of deciding when a battle is really necessary, for instance if he has something dangerous, and when I should just ignore it, he gets really grumpy with a balls so I just don‘t let him have them.
One thing that really jumped out at me in your post was that it sounds as if your dog is defending you against the intruders/ visitors etc. and sees that as her mission. I would try to turn that around and concentrate on giving her message that YOU are in control and she can take a back seat, When visitors arrive,train her to go to her bed and stay there until everyone‘s settled and she can come and greet them, tell everyone not to make a huge fuss of her as soon as they arrive, in short she has to learn that she‘s not the focus and its not her job to be your body guard. Another thing I would avoid is picking her up on your lap, that‘s giving her an ideal position to try to show her authority.
Constantly having to guard and look after its humans is very stressful for a dog, she needs to get the message that that‘s not her job, if you get what I mean.
As far as speying is concerned, I‘ve only ever had male dogs and had to have my current dog neutered for medical reasons but personally and only from my own experience, I don‘t think it has any positive training effects and on the contrary can possibly cause other issues, includinb weight gain, change of coat etc. I‘d urge you to give it a lot of thought and plenty of time before you resort to it.
Hope that’s helped a bit! Main thing is to reassure you you‘re really not alone, I don’t think any of the issues you describe aren‘t trainable or at least manageable and your dog is still young and trying to see how far she can go.
Good luck, do stick with us and let us know how things go.
