Filtering your favorite breeds requires signing up for a free account.
Breed selections are stored on your account profile. In order to use the feature, you may create a Wallpupper account or login to an existing one and tap the Filter icon on the top left of the the main screen.
Opening category navigation screen displayed
Select your desired breeds from the list and it will be saved to your profile
Once you've selected your breeds you may swipe down or tap the back arrow to see your category changes in the app.