The answer is NO humans can not get worms from dogs
Yes. Though the parasitic worms of horses are similar to the worms of dogs, they are not the the same. This means that horses won't pick up worms from dogs and vice versa.
Dogs can certainly have worms and parvo at the same time. But worms in the feces definitely means the dog has worms.
yes.
no
Worms live in poop. By eating poop they have worms and barf
no
yes they can
i dont know what you mean by the late part but dogs cant get worms from chocolate
yes. all dogs get worms and some are even born with them.
Yes. Mostly any meat can give dogs worms For example fish, pork, and maybe chicken but its rare if your dog gets worms when it eats chicken.
Hammerhead worms do not bite.