Is he eating a lot of grass? I know my dog loves to eat grass, and I have to stop him from eating too much or he starts throwing it up. Maybe he too pees green when he eats too much grass, but I don't know, I haven't been paying attention.
Green discharge is a sign of infection. Go see your veterinarian.
if they are not female and are not fixed
If they aren't neutered, yes.
No, but they do remain at home and not wander.
they shouldnt, thats a problem, talk to your vet.. thats not normal..
No, after being spayed, fixed adult female dogs no longer go into heat because the surgery removes their reproductive organs, including the ovaries which produce hormones responsible for the heat cycle.
Pro-oestrus, where the vulva swells and there is clear, then bloody, discharge. The female is often nervous.
They still may have the urge after being fixed if the female is in heat, or goes into heat. Just because the male is fixed, doesn't mean he has lost the urge, or can't do it any more. All that has been removed is his nuts and sperm. Therefore, the male and female can still mate and get locked up, but can not get pregnant unless it is recently after the male has been fixed and he still has a little bit of sperm in his system.
The female should be spayed (fixed) at about 6 months. Some believe that she should have a litter before being spayed, but the only thing that does is add more unwanted dogs to the dog pound.
All Female dogs can have puppies, but only if that havn't been fixed. I don;t completely understand your question but by 'may' I think you might have meant 'many'.
Yes as long as they are not fixed Such as dogs some peopel buy dipers for dogs because they have a period tho i believe it is only once a year when they are in heat
Some female dogs get Pyometra, a disease of the uterus. It will make their organs fill with pus and they will rupture. Get her fixed. Also, your male dog is fixed, so it should be fine, if you notice a lot of humping, separate them if necessary.