
I have a 8 1/2 stone male dog that is scared of flies! :)
Nothing else makes my male nervous, he is a well balanced boy, but when it comes to flies, he comes running to me and looks back at where he last saw the fly!
Where as my girls who are the same breed try to catch the flies! they love to play chase with them! :)
I am not sure of the cure for this behaviour, but I feel in my males case, he is not really destressed about it, he still holds his tail, it just annoys him I think when a fly comes near :)