In the old days I would have barked wildly in its face.
But not today.
In fact, once at the Dogs' Trust open day, I showed curiousity at a rescue pony, and I went up to it and when it sniffed me I barked and we both jumped out of our skins.
This horse has shown endless patience with me (in return for a few pieces of carrot) and now I choose to lie by it rather than anywhere else in the area (this was not posed).
And go fabulous horse!