I think any time you put two dogs together that have some "guts" or a bit of fire in them, the DA part, when present is a lot more noticeable. My first Bitch hated dogs, all dogs, male or female. Unless you were a part of our little circle of friends, then you were the best thing ever as far as she was concerned.
At least with me, before me she fought with the two other females, a corgi and a mal all the time in her house. Legs were broken from bites, faces scarred, and punctures.
She lived most of her life with at least one female in our house and a 2nd one later in her life with no issues with either of them.
I had to work a lot on dogs outside the "pack" so to speak and eventually she was ok with them as well, at least not reactive or aggressive, but I kept it all very controlled. If it wasn't, it was on.
My two females I have now, dogs they don't live with? who cares. no aggression, they don't really pay much attention to them at all. They notice them, but there is no desire to interact positively or negatively with other dogs. One is generally a bit snarky with others that get in her face, basically, just telling them she's not interested, but no real aggression, just a voice of displeasure. This female played like crazy with my other female, constantly, but since she's passed, nothing and it's been over 2 years.
She will play with some dogs, but it's not a regular thing, she just doesn't seem to care one way or the other.
The other female, Yoli, doesn't care about others much either, but if they're up for play, she's more than willing. Males or females.
These two together though wasn't always good. Took a bit of work and today, I can keep them out together inside or outside and they can exist together, but it is under constant supervision and management. One wrong step between the two and it is go time and it is ****ing nasty. I hate dealing with it, but I love my dogs so I do it.
The two males I've had here Bo and Paco, never any issues, male or female, pack or non pack dogs.
I think there is a lot behind DA, SSA or any aggression issues. Too many variables to make a blanket statement. It's not a deal breaker for me. I'd rather not deal with it, but can if I have to.
As for Mal's, definitely find they type you like and get one from there
I've worked with a lot of them over the years. Some are very nervy, snipy driven messes. Make the handlers happy on the field but IMO sucke everywhere else. But that's me. There are a lot out there like this, just because it has some titles doesn't mean it will be a dog you are happy with.
I've also worked with a lot that are very driven, very stable and very social and everything and I do mean everything in between. One that I work with a lot is great. He'll bite the **** out of me and then 30 seconds later we can be hanging out, he'll jump in my lap and eat pizza with me. He can pace for hours on end or he can just lay and chill, I swear he looks stoned sometimes, for quite a while as well. A very balanced and driven dog, but he's kind of weird I think
His daddy on the other hand, not nervy and driven, but he is NOT social by any means. and if you displease him, he'll let you know. He's fine in his "pack" but if you're not in it, good luck. his mother is a sweet heart. I'd take her home today if I could. I'd take his daddy too if I knew I could feed him without being lunch myself
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They have 4 mals, 2 males/2 females and they live in the house together and are fine, Plus an offbreed. One was a national champ ring dog and the one up and coming, no doubt will be on some podiums as well when his training is complete. So she's a pretty savy dog person. A person without a clue would be in a house of chaos and there probably would have been some accidents in that situation.
There's just such a wide variety in all the breeds that you really need to get out, see the dogs, find some that you like and find out where they got them from. See them with your own eyes and interact with them in your own way for a bit if you can. That's how you'll find a dog you like.
Writing about and reading about is great, fills in the gaps until you can actually observe and feel in person. Thats' when the real and meaningful evaluations can take place.