yes
Yes.
No, unless it a very dirty walnut.
Possibly, depending upon what the worm or larva is. It's more likely that you wouldn't get sick, but I would recommend removing the worm from the walnuts before eating any of them. Also, if you could cook the walnuts (such as roasting or heating them) before eating them, that would also make them safer.
Possibly, depending upon how the walnuts were stored and how expired they are. The big concerns would be post-processing contamination with bacteria or mold outgrowth.
yes. for that matter you can get sick using fresh shortening. use butter.
Walnuts are walnuts. They are whole, pieces, or halves but still walnuts.
yes terribley i would wait and see if you can take some upset stomach medicine or something.
1 animal is a hamster . it can eat walnuts , peanuts , etc . P.S: no salt they will get sick !
Yes, walnuts can be pickled in vinegar
no they can not crack walnuts
Yes. Their biggest risk is that they can block the digestive system, requiring surgery to fix, but can also be toxic to some dogs and even cause neurological damage. It can also give them cavities. Also, if the dog is small, it can be extremely harmful, often making the dog very sick. Small dogs could choke or suffocate, and the large nut could griend their teeth and make them more likely to fall out. Peanuts are also bad for dogs, if not in very small amounts.