Help with categories short code

Hi,

I have a menu on my site which includes a shop category with dropdown sub menus, now for each sub menu I’ve created a page which includes a shortcode like :[product_category category=”dog-leashes” per_page=”12″ columns=”4″ orderby=”date” order=”desc”]

The thing is that when I am entering the page I don’t see the page as I am seeing it when I enter the page from the breadcrumbs..
It is a bit hard for me to explain, so here are some links to demonstrate:

The page with the short code:
http://practi-shop.azurewebsites.net/index.php/practi-shop/dog-leashes/

The same page using the breadcrumbs:
http://practi-shop.azurewebsites.net/?product_cat=dog-leashes

I would like the page with the short code to display as the “breadcrumbs page”

Thanks!