I had moments when I would go watch the black bears, when I lived in the California mountains. Even when there were cubs around, I was not considered a threat. But then, I also respected their space, and stayed far away, and never made any gestures they they might not appreciate.
As for dogs, I am allrgic to them, but like them well enough that I take two different types of allergy pills very day, so I can be around them.
When I was dating, one guy had a Pekingese that he claimed would never get near anyone, and was very territorial. I sat on his couch when we talked, and guess what. That Pekingese put his paws on my knee and begged for affection. He was shocked and bewildered. He must have thought I was a witch or something, because that was the last date with him, ever.
I know animals are good judges of a person's character. If my dogs don't like someone, there absolutely has to be a good reason why.