BY DR. M, ON DECEMBER 26TH, 2012
I’m no expert on vertebrates but I do remember somewhere in my undergraduate learning that a distinguishing feature of mammals was the mammary glands. Those o’ so important glands that provide nourishment to offspring.
But what does an animal do if it doesn’t have access to milk producing glands. In snails, which I know better, young larvae often just thrown out into the ocean and told “Find your own damn food!”. In the really lucky species, the larvae are hatched with a yolk sac. In the really unlucky species, like those in the genus Neptunea, an entire stalk of eggs are laid by the female. The first few juveniles to hatch go through and consume their unborn siblings.
Article here: http://deepseanews.com/2012/12/if-on...h-had-breasts/