Puppy ate a beef chew and now has diarrhea and is not eating well, blockage?

The only one that can answer that is a vet as its been going on 2 days i would get this vet checked .

I would take him to a vet tomorrow if he doesn't turn around. They'll prolly do a barium series to pinpoint if/where there's indeed a blockage. But because he's having diarrhea, that's...not exactly a blockage haha! They might give him something like Endosorb for that, as well.

As long as he's drinking and otherwise moving around as normal, I wouldn't be all too horribly worried. Just keep an eye on him, and maybe try the rice---warm it just barely, then blend it up in a food processor with some water and the boiled chicken to make it easier for him to eat & digest. You might also add a teaspoon of pumpkin to solidify his diarrhea. (But not too much, because pumpkin works for both diarrhea & constipation.)

definitely should go the vet right away when it could be something serious. but...

if it was a real bone, then it could be the same thing that happened to my dog. My dad went to this weird barbecue festival thing once and brought my dog back a huge bone from one of the things of meat. They were giving them away for dogs. She loved it, but she got the same kind of sickness after she ate it. I brought her to the vet with a stool sample and they said it was some kind of bacteria that was on the bone and that it is common when dogs eat real bones. It went away in few days.