Back to whales again! In general, cetaceans have no protruding udders like cows. Whale mammaries are two long and fairly flat organs inclined to each other at a slight angle. Their tips are not far from the umbilicus, and the average dimensions in “resting” Rorqual cows are about 7ft. by 2 ft. 6 in. by 2 1/4 in. In lactation, as with all other mammals, there are discernible changes in the size of the mammary glands. During lactation, the thickness of the glands can increase from as little as the 2 1/4 in. mentioned to a maximum of 1 ft.: and the colour changes from pink to golden brown. If the glands are strongly distended, the nipples can be detected from the outside. Jets of milk have been seen to shoot from the nipples of whale carcasses, when whalers call them “milk filled” – a sure sign that the animal was lactating.