Yesterday I posted a blog wishing everybody a Happy Father's Day. It turns out that I was barking up the wrong tree!
I was a week early, it seems.
So barking up the wrong tree is when you are mistaken, usually, if you are trying to find a solution to a problem but in the wrong way or place.
The policeman thought that the brother had committed the murder but he was barking up the wrong tree.
Here's a video clip about raising venture capital and it's all about barking up the wrong tree!
By the way - English dogs say woof woof!