[QUOTE=JanM;5745673]
It depends on the individual dog, more than the breed. I think doing a lot of research on a breed you are considering would give you an idea of the aggression levels, but it still would vary according to the individual animal, their socialization, and the other animals they live with or encounter.[/QUOTE]
You forgot to mention it has a lot to do with the people interacting with them too.
OP, this is no slight to you, please don’t take it as such…but you should take a look at your management and how you discipline/interact with your dogs.
I have grown up with dozens of dogs; we have always been the sort of family who has an assorted “pack” running around, thanks to the fact that no one in my family can turn down a sad hard-luck case. :lol: I’ve had hounds of all shapes and sizes, guarding dogs of all nationalities, and a hefty serving of good old mutts in assorted colors. At one point, we had a giant 150lb Newfie mix, a big poorly-bred (as in, not at all according to breed standards, just bred for dumb idiots who need a big dog to make them feel manly) 110lb Doberman, a 50lb Akita-something or another, and a 30lb Beagle who all interacted peacefully. Right now, I have an adolescent 80lb Belgian Malinois, a 45lb Aussie/Husky mix, and a 35lb Border Collie mutt.
Apart from the occasional bicker over a juicy bone, or an ouchy old arthritic dog snapping at a too-rough puppy, we have never had a dog fight. We’ve had mixes of all ages, sexes, and breeds. Even some litter mates who grew up together tossed in for good measure. They have all lived in the house, slept on the same beds, been fed in the same bowls at the same time in the same room. And no fights.
So it just makes me question why you’ve had so many aggressive dogs (or at least you make it sound that way) over your life time. I’m certainly no professional dog trainer, but I have 4+ dogs at all times and regularly dog sit other dogs, who come right in and play with my pack, and I’ve never had an issue. Ever.
As for your other issue…yes, those darn Beagles are escape artists. :lol: Everytime one of my hound mixes has died (I’ve had three, who died at 16, 16, and ~14, so long healthy lives, I’m not killing them off!) I’ve sworn it will be my last one! But darn it if they aren’t so cute, and darn it if there isn’t always one being given away by someone, usually someone who has bought it intending to keep Mr. Beagle in an apartment with one 5 min walk around the block daily!
We had to go pick up my last Beagle five towns over once…and he had only been gone for 2 hours! (This was after he popped out the screen on the window facing onto the porch…SOP was strict leashing!) :lol: