Ohhh that's an interesting question, I woulda never thought of that! =o
My dog does that sometimes, he has never been trained for it, but if my blood sugar is really high or really low (I'm diabetic), he will sit by me/climb on my lap or whine at me cause he knows I need insulin or something to eat it's crazy how he just knows. o.o;;
Yeah, dogs are the sweetest like that. Cats too.
Someone I know is a diabetic and her cat will lick her feet when her blood sugar is really high or low.
With what dogs can be trained to do in reaction to what they already detect instinctively, I think that guardians would be smart enough to take past observation and apply it (even if it ends up not being correct).
Going to bed now, but on the note that you can edit, I'd like to remind everyone that it never hurts to do some spell checking and grammar checking on their entries! OuO