My dog was/is very much one for picking up and eating anything when he was a puppy and even now at four years old, though not quite so much. Having said that, just this morning he picked up what looked like the cap top off a mascara wand (don`t ask how that came to be lying about on the field where we walk, we, or rather Bob, have found odder things), anyway, bottom line is he swallowed it and now I`m worrying and watching like a hawk yet again.
So I can relate to how you are worrying about Malone, especially with him being a pup still. Maybe all you can do right now is watch him very carefully.
I searched out this below for you which may be of some help.It is from vetinfo4dogs. Click if you want to check this, or any other info, out.

Q: I had a question about diarrhea. My dog doesn't have CHRONIC but just got it. What are some helpful remedies? He feels miserable. please add those ideas to your site. thanks. mj
A:
Acute diarrhea in a puppy should not be treated at home due to the potential for parvovirus. It really is important to seek veterinary help pretty quickly, especially if the diarrhea is preceded by or accompanied by noticeable depression.
In an older dog with acute diarrhea there are some things that you can do at home that may be helpful. It is often beneficial to with-hold food for 24 hours and to keep fluid intake to small amounts at one time without restricting the total intake. A good method of allowing access to small quantities of water at once is to put ice cubes in your dog's bowl. As the melt water is produced in small quantities. It is usually OK to administer an anti-diarrheal product such as Immodium AD but your vet should calculate the first dose for you. Some vets advise giving a small amount of plain yogurt. If an older dog continues to have diarrhea after 24 to 36 hours without food intake it is a good idea to consult a veterinarian to begin the process of finding and treating the cause of the diarrhea.

Mike Richards, DVM

I do hope Malone gets better very soon, please keep us posted.