OK - his mum was YELLOW and his dad Black :wink:
Both chocolate and yellow are recessive genes - therefore in order to produce chocolate pups, both parents need to carry the chocolate gene. Chocolate genes can lay dormant for many generations, producing more than one shock when a chocolate appears in a litter of a breeder who don't gene colour test their dogs
Black is the dominant colour, therefore, if you mate two dogs that don't have the same corresponding colours, you will get black.
A black dog can be
Dominant Black
Black Carrying chocolate
Black carrying chocolate and yellow
Black carrying yellow
A yellow dog can be
Yellow carrying Chocolate (No Black Pigment Liver Yellows)
Yellow carrying Black
Yellow carrying black and chocolate
A chocolate dog can be
Dominant Chocolate
Chocolate carrying yellow
Two chocolates bred together can NEVER produce black
Two yellows bred together can ONLY produce yellow
You do see chocolate stud dog owners claiming their pups produce lovely black and chocolate puppies - when in fact, yes, they are the sire of the pup, but the black colour is solely down to the dam and what colours she may, or may not, carry, e.g. if you mate a dominant chocolate to a yellow carrying black - ALL pups would be black.
HTH and doesn't confuse