If you cant tell the difference between a cat and dog through the fog then dont bother. All you need do is whistle and call out come on fido and you will find your dog.
By the way it doesnt work on deaf dogs or dogs who arent called fido come to that.
This is how we knew (or strong evidence ) that my wife had an autoimmune condition that was later diagnosed as atypical SLE.
So the quiz for today is to work out what the hell I am talking about - I really need to know.
By the way dont try this at your next rheumy appointment carrying a bag of doggy treats and shouting out fido, rufus etc just in case you have a deaf dog.
Thats it on this topic as i retire to shouts of get off.