Half an hour is not very long for a dog when it is left on it's own for that long. I understand that you have to work, but the dog doesn't.

My guys only get half an hour in the morning and an hour when I get home, but they are never left for more than 4-5 hours.

Beagles are very pack orientated animals so this amount of time, especially for such a young dog is too long.

Ideally you should look at ways of reducing that time i.e neighbour, dog walker etc. An older dog would be better at dealing with this, trouble is when you take on a dog this young or buy a puppy, you shouldn;t, unless you can care for it properly. I don't mean to have a go, but 7.5 hours is too long.

You also need to extend your walks first thing, if you are going to leave him. I would say an hour off lead would help, but you will prob still have a problem.

Sorry to sound so doom and gloom. All the rescue organisations say that dogs should only be left for a max of 4 hours. There is a reason why the experts give this advice.