My husband just stripped our yellow lab because she had been holding more than 3 weeks. There are about 20 babies but they are different colors! Some are light yellow, and some are a much darker brown. How is this possible? Does this mean there were two different fathers? I had other varieties of African cichlids with her so she could have crossbred with something other than a yellow lab. But is it possible for her to have bred with more than one male?