While searching you have several options available.
For example when you search a particular dog you type it"s name at Full name; or at Reg.No. the (full) registrationnumber and next Search. From some dogs several registration numbers are known. All those numbers will be included within your search-request.
Gender: if you only want to find males: click on "Males" and if you search bitches only: click on "Females".
Colour: in case you are looking for one particular colour in males: click "Males" and select the colour in the dropdown menu.
Country: if you are searching for dogs born, bred or present in a specific country, start typing the first letters of the country till the right country appears.
Year of birth: Click on the calender at the left side and select the years you are interested in.
Age: are you looking for males that are in a fertile age you select 2 years in the left and 12 years in the right input-box for example.
Photo’s: do you only want to see dogs having pictures, you select: "Only show dogs with one or more photo’s"
You can combine several search options.