My dog gets high

I know, I have no way to scientific way to prove that my dog gets high, but there are mushrooms growing naturally in our back yard on a tree stump. This is the first summer that they have appeared. Dad gets rid of them every time he mows, but my dog is constantly going out and eating them before he can get to them. Not only is she snacking on them, but she is obsessed with eating them whenever she is in the back yard. I am convinced that she is under the influence of some sort of mushroom substance. I wonder if the police can do drug tests on dogs…