Well, without my knowledge, my pygmy female, Freya, who is tiny, somehow last year mated with my enormous Anglo Nubian male.  The first I knew about it  was when I found a male and female kid last April!!  I have sold them, but having seen the female, not long ago, she is the colour of the AN and looks bigger than her mum already.  Its not something I would have done, mating her with the big goat, but the kids when born were pygmy sized!!