Well, let's see...
When we got Jack, he was 14 weeks old and we had NO plans to have a greyhound puppy - it just happened that way. After a month, we realized he and his sister were meant to be together, so we got her, too. Life was a heck of a lot easier with two puppies vs one (there's a really long story about how we ended up with puppies instead of the planned retired racer somewhere in the archives).
Then Jack died when he was only 13 months old. We knew by then that we were not meant to be a single hound household, and Chloe was terribly lonely, so I went to Oregon and adopted Tip.
We adopted Diego, our IG, this last Spring, and I think we're at the limit, now. We have our houndies, and we can still foster.
Three and four dogs (or more) really does add to the work (I think) - logistics for travel, feeding, cleaning - but it's totally worth it for us. However, going from one dog to two is actually easier, IMO. With two dogs, you're not always the primary source of entertainment and attention which is really nice if even one of your hounds is at all active or high energy.
Besides, as a woman, walking two large, powerful dogs by yourself is really cool. It doesn't matter that most people don't know they're a couple of marshmallows

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