Right, i know I'm going to get absolutely flamed for suggesting I may leave my dog alone for more than 30 seconds, but here goes ..
We plan to get a puppy. I'm looking for some breed suggestions, We would like a breed that is medium sized (or the larger side of small/smaller side of large) and fairly athletic. Doesn't need to be a working dog or anything, but we will be taking it out jogging with us regularly and for example, a little sausage dog probably isn't going to appreciate that/will be bad on its back etc. Additionally, realistically if I'm going to be walking it as much as it needs, id prefer if the dog is a breed that I'm going to feel a bit more secure running with in the dark in winter for example. Again - a little pug is probably going to make me feel a bit more vulnerable if I'm out in the dark walking it on my own iykwim
I'm planning to take several months off work with a puppy, to train it, potty train, get it used to being alone bit by bit etc.
Once I go back to work there should be (and certainly will be whilst pup is still young) someone else home every few hours most days of the week to let them out to the toilet, or someone that can work from home some days, or if needed I can look at doggy day care or a dog walker.
When we are home in evenings, dog will get lots of attention, be walked at least twice a day, and get big runs (age appropriately) at the weekend when we have more time.
Will do training classes, look at activities to keep them busy during the day like food puzzles etc etc.
I say all this to make it clear that I'm not just getting a puppy like it's no big deal and then locking it up in the house for 10 hours a day and not caring.
However, my dog will, as it gets older, be left on his own for several hours, several days a week.