A neighbours dog keeps fowling my garden how do i stand legally ?

Is he legally bound to keep it out of my garden if uninvited ?
Yes he is, and he has a legal obligation to clean up after his dog. But whatever you do don't blame the dog or hurt it, you will then, quite rightly, face possible prosecution.
Report your neighbour to your Council's environmental department, they will clean it up for you if your neighbour doesn't. The Council can also deal with the neighbours anti-social behaviour too. Don't let him get away with this. Responsible dog owners like myself end up getting tarred with the same brush as this d1ckhead neighbour of yours. Do everything you can to make him see the error of his ways, he's totally in the wrong and you have the moral and legal right on your side.
Edit: Jeepers cripes, why do some nutcases always suggest shooting the dog? I bet they're American. Trigger happy freaks.
That's what they make pellet guns for!
Of course you need to talk to your neighbor to make sure that is dog will not do this anymore, if the neighbor doesn't do anything Just put a small bowl of anti freeze in your garden it will take a few days to the do to stop coming in your garden. Shoot the dog, shoot at the dog your choice
Take a photo of it fouling your garden and take it to the council-.
Owners should not allow their dogs to foul anywhere and there are laws to prevent this happening.
To take action you need proof and taking a photo or video of the dog will be your proof.


Answers:
Yes, he is letting his animal trespass on your property. Also in most places, it is against the law to let an animal roam without supervision. You can call animal control and report him, and they may ticket him, or take the dog if it is loose. I am assuming you have talked to your neighbor first of course. If you haven't talked to your neighbor do because they might not know it is getting into your garden.
A DOG hunts for birds in your garden?

That sounds more like something a CAT would do.
I would say legally standing 'yes he is'. 'Non- legally' I would say that you would often be 'standing' in dog crap
how does the dog get in to your garden..? is it let loose.? yes they do have a responsibility to controll and restrict the dog...!!
HAVE A WORD WITH YOUR NEIGBOUR BOUT IT LEGALLY UNLESS YOU HAVE VIDIO EVEDENCE I DONT THINK YOU CAN DO MUCH.
on one leg in their garden doing the same!
Yes, he is. You now have the right to call animal services and report it as an unrestrained animal. I would recommend notifying the owner that you mean business and if the dog goes into your garden again, then you'll call it in, and they can take it away, put a leash on it, or even put it down.
Yes. Contact your local Environmental Health department. Details should be on your council website...
Yes he is, its trespass.
Get some photo evidence and report to environmental health if you're in the UK.
WELL FIRST YOU MAY WANT TO NOTIFY YOUR NEIGHBOR. THEY MAY NOT KNOW THAT ITS IN YOUR YARD. BUT IF THEY DON'T CARE THEN YOU SHOULD FIND OUT THE LAWS IN YOUR AREA FOR ANIMALS. SOME REQUIRE A LEASH AT ALL TIMES. ONCE YOU FIND OUT THE LAWS YOU CAN CALL THE DOG CATCHER, IF THERE IS ONE, OR LIKE ANIMAL CONTROL.
IF THAT DOESN'T WORK YOU CAN ALWAYS GET REPELLENT. AT PET STORES THEY HAVE A REPELLENT THAT IS ESPECIALLY MADE FOR GARDENS. OR TRY A REPELLENT TO PUT AROUND YOUR ENTIRE YARD. WE USED ONE FOR THE STRAY CATS AND JUST SPRAYED IT ON THE FENCE, IT WORKED JUST FINE FOR US. WE HAD TO SPRAY EVERY SO OFTEN BUT WE HAD NO PROBLEMS WITH THE STRAY CATS.
Do what I did , I picked it up in a plastic bag and took it round to them and said, I believe this is yours.
Leave some laxative chocolate on the lawn and it will do it on his carpet. I will feel very sorry for the dog
yes report them to the dog warden he will give them a warning

i just picked it up slung it at their front windows soon stopped it
If you don't want anything in your garden , use your loaf and put a bloody fence up.