Hello all. We have a litter of puppies from 2 black labs. The puppies were all born black and registered as black, but now they are a bit older some of the puppies' under fur is very brown giving them a choco-noir kind of colour. The paternal mother was chocolate so it seems that gene is showing through this litter. The previous litter from the same pair were all black and stayed black. Is this unusual for a colouring? Thanks
