Two years ago my wife decided we needed another beagle. Quincy is 10 years or so old. We don’t know because we rescued him from walking on a very busy street.
We went to the shelter and she was laying on a big concrete slab and really did not pay much attention to us. When we brought Quincy down to see her she perked up and was very happy to see him. I figured we could make it work. She had a 2 inch all area around her neck with recently closed wounds caused by living on the end of a chain for a year in a back yard pen.
We took her home and after awhile named her Nordberg. She meant well but everything went wrong for her. She was silent for about 4 months. Never barked or growled. Then one day while Quincy was barking at a dog walking by she barked. My wife and I both said what the hell was that. Our barrel chested beagle has a huge voice and seems to know it.
There is a young Lab down the street in a fenced in yard. We walked by and Nord went up to the fence. The lab was barking and barking. Then she let out a huge bark. That dog took off like a shot and ran to safety on the back porch. It will not come within 10 feet of the fence.
There are 2 fenced in dogs we have seen since then. Both of them got a bark and ran away. One was a little puppy. I am not sure it recovered yet.
When she chases a squirrel she lets out a huge bark with a touch of nails on the blackboard that always has every head in the park turn. You just never know.
That reminds me of a dog my friend had (maybe has.) Years ago I was at a summer party and had been imbibing too much, so I was lazing on a lounge chair, not really dozing, but not really awake. His dog came up and stood there staring at me. No menace, nor friendliness apparent, just staring. I guess I was supposed to *do *something, because after about 10 minutes it let out one huge bark. Startled me enough to just about dump me out of the chair. Everyone laughed. Having delivered the bark the dog walked away, apparently satisfied.
A few years ago my husband decided we needed two beagles. 
One of them, the small snarly one, barks at bleeping anything. The other, large loopy one, is shy and submissive, and very rarely barks. When he does bark it’s at Small Snarly to try to get her to relinquish control of something particularly attractive (like dirty underwear). And man, his bark is really, really loud and booming. It actually hurts my ears when I’m within about 20 feet of him. It’s a good thing he doesn’t bark at anything but Small Snarly - our neighbors would have the police after us.
Two beagles is the right amount.