@AllInaday
Yep, although there are many decent, considerate dog owners about, there are complete wassocks as well (a few on this thread!)
Every time I go for a walk for an hour or so, be that by the canal, or river, or in the woodlands, or the country lanes, I always encounter an entitled clown with their mutt on the loose! And 2 out of 3 times, the mutt comes bounding up to me, knocking me sideways, (almost into the canal a few times,) and covering me in mud and crap off their paws.
I have also been scratched and caught by their claws, with cries of 'he won't hurt you' coming at me.
And I have even been pinned up against a wall by someone's dog, who the owner had NO control over. He pinned me against the wall for 2-3 minutes before he could get him away from me.
Big fucking lurcher it was. Went mental at me, and all I was doing was walking along a country lane, minding my own business. All the man did was walk off saying 'he is only playing!' Absolutely fucking clueless! (Like a few posters on this thread!) 
In addition, I have been on the beach with my family, and had peoples (loose) dogs pissing around with our stuff on the beach, and jumping up my kids, One time a dog grabbed hold of our backpack and dragged it across the sand for about 20 feet. Everything fell out, including a £150 digital camera, and then he pissed on our backpack. Think that's funny? It ruined my camera, and I never saw the owner again, as he couldn't get away fast enough!
The entitled dog owners on here, who think their mutt can do no wrong, would find some way, deep down in their tiny brains, of blaming ME for my camera being wrecked, and ME for the dog attacking me and pinning me against a wall, and ME for nearly getting knocked into the canal.
'Oh you should take better care of your stuff,' and 'you should not walk so close to the canal then,' and 'well you should have put your hands up and said NO' because THAT always works when a dog is attacking someone DOESN'T it?' 
I wish these dogs and their appalling, entitled owners would drop off the planet to be quite honest. I have no IDEA why they think every passer by, wants to be mauled and clawed by their mutt.
In addition, in many villages around me, (and the fields surrounding them) there are signs all over the place, telling people to keep their dogs on leads, as they scare the farm animals, and especially the young farm animals. Dogs on the loose, spooking farm animals with their wild and erratic behaviour, (sometimes even jumping at the animals and attacking them,) have actually resulted in farm animals losing their young, because of the shock.
But I suppose they are JUST BEING FRIENDLY eh???
FFS!
Like a lot of other (sensible) posters on here, I am both gobsmacked AND angry at the lackadaisical attitude on here from some dog owners, trivialising the bad behaviour of some dogs (AND their appalling owners.) They think that a badly trained dog, off a lead, jumping up into peoples faces, is acceptable, and is only 'being friendly!' And if you DARE challenge them on it, or get (understandably ) pissed off, you are being RUDE to them.
How about THEY stop being bloody RUDE, and start controlling their mutts, and stop assuming everyone is interested in interacting with them. Because many people are not, and NO-ONE wants a dog bounding up to them, jumping up them, and covering them in mud, and scratches, or even worse, intimidating and scaring them, and biting them.
THEY are in the wrong, (the entitled, appalling, dog owners who think they and their mutt can do no wrong;) NOT the people having to tolerate their dogs, with their 'friendly greetings' who are 'just playing' and who 'won't hurt you.' 
Sort yourselves out! (And keep your bloody dogs on leads!)