While baby's skin can potentially grow much darker as she ages and experiences pigmentation processes to their skin, they will remain a white - ish color as a result of the very thick layer of fat covering the expansive collection of their blood vessels. (checkpregnancy.com)
If you can't feel the ribs at all, or only through a very thick layer of fat, this is a sign that the dog is overweight — a more common problem for dogs with plenty of access to food. (animals.howstuffworks.com)
When I sliced the bread, I saw that the bottom has a thick layer of fat (I'm assuming it's the butter). (smittenkitchen.com)