Are there any mammals(other than humans) that are born without hair?
928836
humans are born with hair. it may be miniscule, or ridiculously fine, but its definitely there. by hair, we don't just mean on the top of the head, hair can be anywhere on the body, including the fine hairs on your arms and stuff.\nthe most hairless mammal i can think of is a whale; they only have hair on their lips.
939486
Gila monster-yes\nchameleon-yes\niguana-yes\nsquid-yes\nladybug-yes\noctopus-yes\ncentipede-yes\narmadillo-no\nbaboon-no\ngoat-no\nreindeer-no\ndonkey-no\nwolf-no\ntree frog-yes\ntarantula-yes\nbutterflies-yes\n\nHint: the armadillo,baboon,goat, reindeer,donkey, and wolf are mammals and they give birth to their young.  Now the only mammals that do lay eggs are the platypus and the two species of echidna.\n\nI hope this helps.
60214
A human embryo begins developing as a female (or some say anatomically indistinguishable), complete with mammary glands and ducts.  A couple of months later the hormones kick in and well...boys will be boys.  Most people (scientists, researchers, et cetera) say the nipples are from that "indistinguishable period."\n\nAs far as all land mammals having nipples, I had to Goooogle that one.  The site I found said all land mammals have nipples except stallions.
147706
Yes we branched off from their line over 2 million years ago so there should be considerable variations  (we walk erect).  At some point in history human hair may have been a way to attract members of the opposite sex (you forgot that males have long hair too).\n\nEvolution is not that quick to say that we are from apes, apes and us are from the same tree jsut as we are from the same evolutionary tree as all other mammals.  we just broke off from others at different times in the history of the earth.
264009
animals with no backbone are known collectively as invertebrates.\nhope this is some help as your question was vague.
682062
Warm-blooded Vertebrate Animals belonging To the Class Mammalia, including all that Possess Hair and Suckle their Young. It includes Three Major groups: Placentals and Marsupials, which are vivparous, and Monotremes, which are Oviparous.
1170414
um your avator has no hair do you know that?
1158484
Placentarian mammals do (not the platypus or equidna)
4420
Marsupials\n\nYou can find more details here http://www.ucmp.berkeley.edu/mammal/marsupial/marsupial.html
1154433
Hair is constructed of a protein called keratin.  It is amazing that fish scales, bird feathers, and reptile scales are also made of keratin.  Hair is a body covering that fit the needs of mammals as they evolved from reptile-like anscestors.  The form was changed from the flat-like scales by some mutation in the gene, genes or pathway producing it.
1065426
Animals that lack eyelids.  In addition to fish and snakes true geckoes of the family Gekkonidae also lack eyelids.  Several cave dwelling salamander species with rudimentary eyes also lack eyelids.  Oh yeah, don't forget the most uncelebrated Squamates: The Amphisbaenians, they also lack eyelids.  Sorry for saying lack eyelids in every sentence.\n\nlack eyelids.\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\nI Lack Eyelids.........
1108284
Human beings lack body hair for a simple reason - we have the most efficient heat dissipation system of any mammal in the world! Human sweating is extremely efficient, since without hairs to trap the sweat on the body, the massive pouring of fluids through the skin's pores works not entirely like car air-conditioning. Humans can sweat more fluid per hour than any other mammal.\n\nHumans are amazing endurance runners. In a recent issue of Discover, the author noted that human beings can outrun any animal on Earth, if the pursuit lasts long enough - humans in good condition do not need to stop and take breaks because our heat dissipation system keeps our body temperature stabler than any other creature's. The ability to "run down" anything gave early humans an amazing survival advantage.\n\nThese adaptations appear to have appeared in Homo Erectus, about a million and a half years ago. Scientists were able to determine this timeline because of the amount of genetic divergence between the two living human species of body lice. Also, Homo Erectus is the first human to develop the skeleton of a fully modern and athletic bipedal human.
1069568
Ligers and Tigons are sterile from birth, so there would be no offspring.  However, if one were to unlock the secrets behind genetic recombination, you could sample DNA from both animals and possbly splice a new, third hybrid ... perhaps a Tigron.  Sadly, natural pathways for an enhanced hybrid from these two creatures is impossible.
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.
1102060
Yes.The are called hermorphodites.They are born with both male and female sex organs.
663061
Nope, your not missing anything.\nNatural selection involves a loss of DNA.\nSay if you take a breed of dog that has the genes for long and short hair, then take it to a cold place such as Greenland or Canada. Left to there own devices, and assuming that at the time there wasn't any other breeds in the area, any short haired dogs would be less likely to survive. If, after many generations of dogs had passed, you took some dogs back to a warm country, the genes for short haired dogs would have either become extinct in that breed, or exceedingly rare.\nNatural selection doesn't show any new DNA - it does not support evolution.\nSome evolutionists would claim "mutations" of DNA would lead (over billions of years) to new species. However this is just another example of DNA loss.
3478
Cimpanzees and most of the higher primates have no tails.  It seems that somewhere along the evolutionary marathon tails got discarded, but it was relatively recently....