Not actually on topic, but,
Dogs that attack people represent a small percentage of the total population of dogs. The fact that a dog is there just makes me take a second to evaluate the dog. I’m never nervous sharing my space with a dog unless it’s actually acting aggressive or frightened or weird. Its presence alone doesn’t put me on edge. The fact that some small percentage of dogs might actually attack, vs say cats who will essentially never attack unless cornered, doesn’t actually mean it’s useful to be nervous of dogs always and of cats never.
On the other hand how much should we do to accommodate people who are terrified of dogs anyway? I have a friend who’s legit afraid of any dog over five pounds. He doesn’t need anyone quibbling with him about how much of a statistical likelyhood it is that any particular dog might actually ever try to hurt him. It’s easier for everyone just to put the dog somewhere else away from him.
But what if I had a friend that was legit afraid of any (example human demographic?)
This is an interesting parallel.
Generally, I too take a moment to evaluate an unknown dog and determine whether it is acting aggressively. In a well-lit populated public area, I don't even take a moment when it comes to unknown men; I only take note if they are already acting aggressively. I give men in public areas even less consideration for potential aggressiveness than I give an unknown male human.
What if an unleashed large dog comes running at you unexpectedly? Do you assume that they're friendly, or do you react protectively first and then evaluate? Similarly, if an unknown male is walking behind me on a dark street and nobody else is around... I pay a lot more attention to them then if it were a crowded venue. Not because I
expect them to be a predator, but because they
might be a predator.
If I've just met a dog for the first time, I don't immediately start rough-housing with them. I give it a while so I know what they're like... just in case they get aggressive with that kind of play. On the other hand, if I meet an unknown man at a party or a club, I don't assume that they are dangerous or anything else - I assume that they're just a normal guy. I only become wary after they've become pushy or aggressive.
And when it comes down to it, I'd rather be locked in a room with a randomly chosen unknown man than with a randomly chosen unknown dog. But I'd greatly prefer to be locked in a room with a randomly chosen unknown cat or female.
Because even if the statistical chances are not high that a given individual man or dog will be aggressive and dangerous... it's magnitudes higher than the chances that an individual woman or car will be.