How do other view this example?

I too would take a keen note of my well-trained dog's indication. 

A good-heart / temperament dog learns to know (and recall / communicate) its household's expectations of other people's acceptable behaviour - not just the behaviour of other dogs in the neighborhood.

An attentive dog will be aware when e.g. the rest of their "human pack" are: a bit tired / ill / distracted / otherwise slow to notice / "read" aberrant folk - and they do their best to communicate / highlight the knowledge-gap promptly.

Your trusted dog will not set so much store by what your friends / neighbours think about someone - instead, they usually remain true to trusting their instinct and understanding of their household's values.

Honestly, that sounds disgusting. I would scoff and walk away, personally. There's a lot of people out there who seem to act like women aren't even human beings but just pleasure objects. It's like they don't even acknowledge they have faces or voices.

Thank you for confirming my feelings, he's about my age, mid sixties, I don't think he's violent or anything, just thinks he's funny and I'm sure if challenged wouldn have no clue that his remarks are in anyway inappropriate or sexist, I'm fairly sure he'd get upset and say something like men not being allowed to compliment women anymore. But to me that's a big part of the problem, men like him think that kind of remark is complimentary and that they have every right to say such things. I'd he'd have said something like "isn't it nice to put the jumpers away now with this lovely weather?", it would of felt more normal and conversational, with no implication about women baring their flesh to please men.

I often wonder what he would of said if we had of worn shorts and "pretty dresses" and he'd not liked what we'd exposed?

I find it very confusing, on the one hand women should cover up and not show themselves off because men might not be able to contain themselves, but if we cover up, longer dresses, trousers etc, then we're told to uncover for men to look at us? 

What if we don't feel comfortable exposing our bodies? If I were to chosen to wear a burkini to cover my scars, varicose veins and wobbly bits, or just because I want to feel comfortable, I've heard of women being told off by random men for not wearing a "proper" swimming costume, some countries, Italy I think have banned them and they also want to ban "ugly" women from beaches. I bet there'd be howls of outrage if someone suggested lecherous old men should be banned from beaches! 

This is completely out of order, whatever the reason. When I was younger, it would have frightened me. It looks as if Fearn has given a good indication for you that this person is best avoided, especially if you are walking alone.

I don’t know how I would respond but I’d likely be unsettled by such a remark. My response, or lack of, would depend on a fuller context and on how I would perceive his manner of speaking. 

The comment was definitely inappropriate, but the reason behind it could be anything from misogyny to ignorance.

My response to that would depend on his age.

Not sure if this is misogyny, but it does not please me at all. However I wouldn't say anything and would try to avoid.

Well, that’s certainly not something that I would say.