do dolphins have nipples?
832343
Yes they do.  The female has two additional mammary slits on either side of the genital slit which retains the nipples.
214546
Dolphins have sex for pleasure but all other animals do it for reproduction only
403561
yes penguins have sex! no they dont suck it, there feet are made for the ice so no, an yes all animals have sex organs!\ngo to the site below! to see them in action!
406989
In my undergrad biology days, this was actually discussed in a developmental biology class.\n\nMen have nipples because, at one time in the womb, they were female.  As the embryo develops, it takes the influence of genes located on the Y chromosome to allow the fetus to develop primary male sexual characteristics.  Up until that point, only the X chromosome is active, and nipple formation has already taken place.\n\nThe nipples are not a purely female trait; it's the mammary tissue in the breasts that are the real indicator.
217561
The dolphin's life can be, at times, very confusing. To make this easier to understand, we have made a cycle showing you the dolphins life. Like humans, dolphins are mammals. They give birth to live young. The only mammal that doesn't give birth to live young is the Platypus. Dolphinsare considered as one of the smartest animals in the world!  There life starts out when there babies, and when they grow older they choose which direction that their going to take. Most babies will stay with the pack that their mothers are in. When they are adults, they will find a mate. During the mating season, reproduction will occur.
446999
why do men have nipples?
1035911
It depends on the kind of dolphin you're talking about. \n\nThe most commonly thought-of kinds of dolphins, which look a lot like porpoises, are air-breathing mammals. They are typically 5 to 8 feet long.\n\nBut there is also a dolphin fish, also called a pompano or mahi-mahi, which is a true fish and not a mammal.  Dolphin fish are brightly colored, have large heads, and are typically two to three feet long. These are the kind of dolphins seen on the insignia of US Navy submariners.
1025681
The other answerers were right, bottlenose dolphins are also able to recognize themselves in mirrors.  The study was published in 2001 in PNAS.  As in the classic experiments on chimpanzees done by Gallup, here also animals were marked with a temporary mark on their body.  Their behavior was consistent with that displayed by chimps and other great apes (or yourself when you discover a weird spot of color on your forehead... that is, except for the swearing you may display).  It is an interesting example of evolutionary convergence with great apes and humans.
11936
Somebody knows, ask an anatmoist. Nipples show up on a fetus before the fetus starts producing sex hormones (estrogen or testosterone). At this point in development the fetus is neither male nor female in appearance. Sex was determined at the moment the egg (X) was fertilized by a sperm (X or Y). This debunks the myth we all started female. As to why nipples develop so early, no one knows that answer.
1036444
I think you're answering your own question.  You say that, according to creationism, women were created in man's image, which would mean that man existed before woman, which in turn would mean that Adam already had nipples and therefore Eve was created with nipples (in his image), but with breasts to feed her babies.\n\nSo, logically, men have nipples because they descend from Adam, who was created with nipples.
359938
yes they are aroused, but not by the same things as us. Yes they have the same mechanical processes as we do for an orgasm.  Although I'm sure they don't have the emotional hangups that we do.  And dolphins aren't the only other animals that have sex for recreation.  There is a primate called the Bonobo that pretty much has sex all the time. Male-female, same sex, masturbation....whatever, they don't care.
191756
Dolphins have hair at one point in their life. When they are born, dolphins have whiskers on their rostrum. A dolphin’s whiskers are about one quarter inch long, and will fall out shortly after birth, as a result of water pressure. Even so, the follicular pits remain open. One can see these follicular pits on the rostrum of any dolphin. They probably serve some sort of sensory function, like the detection of speed or current. Some great whales and one type of river dolphin retain whiskers their entire lives.
11108
We are all mammals, and a mammal is defined as an animal having mammary glands (and nipples), pentadactylic limbs, hair, and give birth to live young.\n\nMen have nipples because we have mammary glands, although these are underdeveloped in Males due to the lack (or controlled amounts) of female hormones such as osteogen in our bodies.  Males exposed to large amounts of female hormones have been known to develop breasts (enlarged mammary glands).
656479
There are pink dolphins in the Amazon region (boto cor de rosa, in Portuguese). They are rarer than the other kind of dolphins found there (Tucuxi).\nThe most famous and interesting story about these dolphins is that they are often blamed for making the young girls pregnant in the region. According to the legend, at night they turn into handsome young men, to which the ladies immediately fall in love.
226498
A dolphin reproduces by laying belly to belly. The female is on top and the male swims beneath her. She will usually mate with several males in one season. This is thought to believed to be a strategy to help protect her young. Male dolphins sometimes get aggressive towards calves and may even kill them if they are not their own. By mating with several males, the female as well as the male(s) have no idea who the father is, and is less likely to attack a baby.
975614
Their breasts and down there :)
502659
The majority of small tooth whales are called dolphins.  They are mammals of the order Cetacea and the families Plantanistidae and Delphinidae and include about 50 species.  All have a beak like snout and sharp, conical teeth.  The term porpoise is sometimes applied to many of the same species, but porpoises, are members of the family Phocaenidae and have a blunt snout and spade or chisel shaped teeth.  The dolphin fish, is neither a dolphin nor a porpoise.  It is a sport fish related to the mackerels.