Hi Shelley!
I took a look at the domain included in your message and it appears that you are using the Neve theme to design your website, is that correct? Unfortunately that theme is not one of our creations and the support we can provide for it will be limited, but we will do everything can to help!
Our WordPress theme Crio, and almost every other WordPress theme out there, ties into the same WordPress menu management system and you should be able to use some our own support guides to create a link in your menu for just the Breeders category.
When adding items to your menu you will see a list of available Menu Item Types and you should be able to create a link for the Breeders posts by selecting that category from Categories dropdown in the Add Items interface for your menu.
Hopefully this helps you create the menu behavior that you are looking and please let us know if there is anything else that we can do to help!