I treated my neighbors puppies with pyrantel pamoate for her (along time ago)
They had severe "runs" and bloody too.
I watched thru the fence...I brought the problem up to her, and dewormed them. I kept an eye on them too.
It took about two days and their poo was completely normal looking.
And they became happier pups afterward too. Filled out and looked better.
I don't know if they had hooks, but they were infested with roundworms.
Poor babies.....and no she didn't or wouldn't ever take them to a vet.
I just hope they got good homes. Two years later she got her dog spayed.