Good to hear he is doing better, did the vet made a poop exam?
Besides worms there's also ameobas in water puddles, areas wit grass, etc, mostly if there's feral dogs, cats, birds or rodents in the area.
That's why vets from here recommend to de-worm at least every 3 months, but you have to keep an eye in them since they can catch parasites at any moment, sometimes they can catch them even in less than a month after a de-worm.
Maybe your boy does has parasites, and his tummy was already sensible from them since before the meal, and he reacted to your stew because of the fiber from the veggies made his stools loose.
And yes is very common for people around here to ask about breeding your dogs and mostly if is pure breed, however not all people have in mind making profit wit the puppies, but because they believe dogs have "sexual necessity" that they "need to have an active sex life or else they will get traumatized and get sick"
This was pushed a lot by old time vets (young vets aren't like that), mostly because if you had a female they will tell you this so she will have a litter and that means more puppies to de-worm, vaccine, tail and ear docking, buying a bag of puppy food from them, etc.. in other words more money for the vet.
I know persons that own female dogs and the vets tell them that if in the second heat she doesn't have puppies then she will catch cancer and die.
Sadly this was ingrained in the minds of many owners :afraid: when people find out that my dog haven't have sex they think I'm abusing and torturing him , and they tell me he is "suffering and desespered to have sex " and that "if you don't have a female of the same breed you should breed him wit a mutt, he feels sad because he is virgin "
The stuffed dog is spelled "peluche" that is very close