Such very pretty piggies!!
Twix is an Abyssinian; I think her colors are Black, White ( does she have a little bit of a brown here and there, or is it just the light and shadows? ) ; and her pattern Bicolor. ( If she does have bits of brown/red her pattern could be Tricolor or have some Tortoiseshell and White mixed in )
Gizmo is so neat! Does he have a crest/ rosette on top of his head, or is it just how I'm looking at it? If he does, his breed is Crested; if not, it's American. His colors are Silver Agouti, Black and White! I think his pattern is Tricolor.
Biscuit's breed is also Abyssinian. I think her brown is Chocolate Agouti--- is she all brown, or does she other colors, too? I think I can see a white chin in her pic. I think her colors are Chocolate Agouti, White, and Beige. Her pattern looks like some Fox and Bicolor, much like my piggy Friar Tuck earlier in this thread