How come mammals have live births and we don't?
815373
quit taking up space with stupid sh!t like this
997614
It's the most likely skeptic's explanation. However, parthenogenesis does happen sporadically in higher animals, and rarity of such an event would satisfy both the scientists and the believers (who would claim it as a miracle).
449435
nope... they have a difference level of chromosomes,\n\n\nthey more than liekly could try.. but the results would be more than likely dead and birth from physical problems such as no lungs, or no heart etc..\n\ndifferent animals have maanged to mate ouside thier chromosome levels, such as the donkey and horse, and the lion and tigers (Ligers).. normally these animals do not last a full age and have birth defects.
871420
Indeed other mammals do have periods or seasons and indeed this is closely connected to fertility and sometime being "in season" or "on heat". However across the spread of mammals alone there is a phenomenal range of differences. For example the lifespan of some small rodents is less than the gestation period of an elephant. Curiously a species to which they are closely connected.\nFemale kangaroos virtually exhibit all the stages of the reproductive cycle at once, fertile, pregnant and raising young.\nIn short mammal periods do happen but don't generally conform to human monthly cycles.
915488
Animals do not go to heaven because they have no soul. They just cease to exist. Apparently, we do not need pets in heaven since only our souls go there. New born babies do have a soul and go to heaven because they are completely innocent.
267950
The mammals are the class of vertebrate animals characterized by the presence of mammary glands, which in females produce milk for the nourishment of young; the presence of hair or fur; and endothermic or "warm-blooded" bodies. The brain regulates endothermic and circulatory systems, including a four-chambered heart. Mammals encompass some 5,500 species, distributed in about 1,200 genera, 152 families and up to 46 orders, though this varies depending on the classification scheme adopted.\n\nPhylogenetically, Mammalia is defined as all of the descendants of the most recent common ancestor of monotremes (e.g., echidnas and platypuses) and therian mammals (marsupials and placentals).\n\nWhile most mammals give birth to live young, there are a few mammals (the monotremes) that lay eggs. Live birth also occurs in a variety of non-mammalian species, such as guppies and hammerhead sharks; thus it is not a distinguishing characteristic of mammals. Although all mammals are endothermic, so are birds, and so this too is not a defining feature.\n\nA characteristic of mammals is that they have mammary glands, a defining feature present only in mammals. The monotremes branched from other mammals early on, and do not have nipples, but they do have mammary glands.\n\nMammals have three bones in each ear and one (the dentary) on each side of the lower jaw; all other vertebrates with ears have one bone (the stapes) in the ear and at least three on each side of the jaw. A group of therapsids called cynodonts had three bones in the jaw, but the main jaw joint was the dentary and the other bones conducted sound. The extra jaw bones of other vertebrates are thought to be homologous with the malleus and incus of the mammal ear.\n\nAll mammalian brains possess a neocortex. This brain region is unique to mammals.\n\nMammals have integumentary systems made up of three layers: the outermost epidermis, the dermis, and the hypodermis. This characteristic is not unique to mammals, but is found in all vertebrates\n\nThe epidermis is typically ten to thirty cells thick, its main function being to provide a waterproof layer. Its outermost cells are constantly lost; its bottommost cells are constantly dividing and pushing upward. The middle layer, the dermis, is fifteen to forty times thicker than the epidermis. The dermis is made up of many components such as bony structures and blood vessels. The hypodermis is made up of adipose tissue. Its job is to store lipids, and to provide cushioning and insulation. The thickness of this layer varies widely from species to species.\n\nMost mammals are terrestrial, but a number are aquatic, including sirenia (manatees and dugongs) and the cetaceans (dolphins and whales). Whales are the largest of all animals. There are semi-aquatic species such as seals which come to land to breed but spend the majority of the time in water.\n\nTrue flight has evolved only once in mammals, the bats; mammals such as flying squirrels and flying lemurs are actually gliding animals.\n\nNo mammals have hair naturally blue or green in colour. Some cetaceans, along with the mandrills appear to have shades of blue skin. Many mammals are indicated as having blue hair or fur, but in all cases, it will be found to be a shade of grey. The two-toed sloth can seem to have green fur, however, this colour is caused by algae growths.\n\n[edit]\nOrigins\nMammals belong among the amniotes, and in particular to a group called the synapsids, distinguished by the shape of their skulls, in particular the presence of a single hole on each side where jaw muscles attach, called temporal fenestra. In comparison, dinosaurs, birds, and most reptiles are diapsids, with two temporal fenestrae on each side of the skull; and turtles, with no temporal fenestra, are anapsids.\n\nFrom early synapsids came the first mammal precursors, therapsids, and more specifically the eucynodonts, 220 million years ago (mya) during the Triassic period.\n\nPre-mammalian ears b
154594
This is a stupid question! To reproduce and for fun! Humans and dolphins are the only mammals that have sex for fun.
996037
Yes all of the mammal does.\nIt is related to the maturity f one organism. That mensturation means that female is ready to be fertilized by the male and already has the ovum that ready to be developig into the baby.\nOk?
140194
>>>>>were we really monkeys years back.\n\nNo. Humans were never monkeys, nor were any of our ancestors monkeys.\n\nHumans and other apes share a common ancestor with the monkeys, but that ncestor was not itself a monkey.\n\n\n\n>>>if so these days why monkeys do not give birth to humans?\n\nI must be misundertanding that question. It can't be as silly as it sounds.\n\nMonkeys don't give birth to humans because they are monkeys. What other answer could there posibly be? The offspring of an organism inherit its genetic structure and hence its gross physical appearance. Monkeys are genetically monkeys hence their offspring are genetically monkeys.\n\n_____________\n>>>>chimps and humans ...would not be able to procreate...\n >>>>because of their different sets of chromosomes.\n\nThere  is no scientific basis to that claim whatsoever. Nobody knows whetherhumans and chimps are interfertile because nobody hs ever tried to find out.\n\nDiffering chromosome counts has never prevented two species reproducing. The world is full of animal species with differing chromosome counts that are perfectly interfertile and regularly interbreed.
454709
Human are unique in having a monthly cycle.  Most mammals have a strict breeding season.  As set by that breeding season, other mammals will undergo a process like menstruation.  These would be whales, dolphins, seals, sea lions, sea otters, dugongs, etc.
989991
Most animals do not care about humans too much. Cats and dogs are different. They have been domesticated for so long and were mostly born and raised in a human environment that they have come to understand and be dependent on that environment.\n\nMost other animals find the environments we have created do not suit them. Exceptions are many, of course - everything from the flea, bedbug and cockroach to mice, rats, many birds and some larger animals like foxes and racoons.\n\nWild life in the city is much more than you would think at first glance. Use your eyes and take notice of the plants growing in the cracks in brickwork and on waste ground. Don't think of them as weeds, think of them as life finding a foothold. Look around for insects and bugs and anything small - lizards, for example. Don't  think of them as vermin. They are animals which have adapted themselves to the environment we have created. Some are there because it's not so different from a natural environment for them, some are there because humans generate a lot of waste which is easy pickings and some are there because we ourselves are their source of food!\n\nThe other animals you mention (cattle and horses) are herd animals and need very large areas of grass to survive, wolves live and hunt in packs and need forest and woodland. Vultures find us just too tidy with our large dead bodies which is what they feed on.
512190
Many bats also delay implantation after the eggs are fertilized.  There are also several mammal groups that have delayed fertilization, holding viable sperm for months until they are ready to begin gestation, and then an egg cell is fertilized.\n\nThis is possible in placental mammals where the egg cell is kept internal, and doesn't have a shell to protect it from the outside environment.  I doubt that it would be possible in, for example, birds, where once the egg is formed it's pretty much a done deal, and development goes ahead regardless of outside conditions.
588741
Living creatures are souls.  Animal life exhibits will all of time.  I have horses.  Sometimes they do not want to come in from the pasture.  It is fascinating to observe just how willful they really are.  Animals, though, vary in their thought processes depending on the species and their individual instincts that God gave them.  \n\nAlthough animals are living souls, they do not have individual moral responsibility to God.  It is the spirit of God's intelligent creation (angelic beings and mankind) that sets them apart from the animal kingdom.
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.
962319
Animals evolve to suit their habitats. Monkeys have tails that allow them to grip whilst brachiating through trees.\nMy point is, if an animal is to be born in a place with water then technically it should evolve to be able to swim. If an animal such as a desert creature was to be evolved then it wouldnt need to be able to swim. So no, not all animals can swim because they dont need to so they didnt need to be created that way.\n\nHope that helps!
261210
Perhaps, the time of birthing and mating is in the spring.  They can not lay their eggs on land.  So, if they do not have water to deposit them in, then new frogs can not be born.  Hence, the population declines.  What do you think?
411983
It's not just humans - most mammals (and other animals to a lessor extent) have emotions.  They serve many key functions for survival:\n\nThey give a reason to act.\nThey give a reason for animals to attract each other.\nThey imprint important experiences in the brain.\nThey help animals make decisions.\n\nThere's probably more, but that's a good start.