Just like a human pregnancy, you want to consult your veterinarian. Take the flea meds that you are using in with you. Many of the over-the-counter meds are toxic to puppies, and can be trans-placental.
Depending on the injury, if it's an infection yes. Animal meds are the same as ours in most cases. If it is a soreness, it won't do any good.
Yes, it is pretty painful for a mother dog to nurse all the pups at once. just imagine 6 little puppies with sharp little teeth chewing on your nipples!
Yes, if its not too heavy.
No, you can't give meds prescribed for a dog to a cat.
your dog is like that because its thirsty or tired so let it rest ok ok.
Yes.
That is OK as long as the dog does not have fleas.
No you have to bring you dog to the doctor fast
no.
No!
Ok
Yes, it is OK, but if any irritation occurs on the pad take your dog to a vet immediantly.