apparently these animals help relax participants. and leave them with a smile on their face. and it seems says even more to this animal the meat the doughy i. scientists in london reckon goats can tell the difference between friendly and angry looking people. in this experiment research is put a black and white photo of a person looking happy on one side and the same person looking on friendly on the other. the goat seemed more interested in the smiling face this would suggest it's not just dogs who can be a man's best friend perhaps don't could be to. a fool. so the next time you meet to go to make sure your smiling it may well be reading your mood. well you've been warned and now i'm going to medical is in west africa