Re: Unicorns?
8087-can-dolphins-detect-pregnant-women.html
Wolves certainly can.. (went on a 'walk with wolves' - hand-reared wolves that can't be released into the wild because they are habituated to humans. We were told in advance that women who were pregnant should not turn up to meet the wolves as the wolves can always tell and show a *lot* of interest in said women).
They also seeming like the smell/taste of people that have pets - my wife and I both got licked on the hands by the wolves when we got to meet them - the only people in our group who did.
I suspect it might have been along the lines of "I like the smell of these - I'll eat them first" kind of a lick.