What is a common marsupial's life cycle?
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Typically the young are born blind and very small. They emerge from the female's vagina and have to find their way to the pouch and to a nipple as soon as possible to begin feeding. They are very tiny and are completely dependant on their mothers for several months. They spend almost an entire season inside the mother's pouch, this also depends on the species which you are refereing to.\n\nhope this helps!
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Most kangaroos are exclusively plant-eaters, with grasses forming the bulk of their diet. They also feed on moisture-filled succulent plants. Only the musky rat kangaroo eats insects and worms as well.\n\nKangaroos can go without water for long periods. Some wallaroos do not drink water even when the temperature is very high. They conserve body water by hiding in hollows during the hottest part of the day.
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baby.\n\nI think it's a primate kind-of thing. Humans / chimps / Anna-Nicole
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Little is known about wild emu reproduction, most information coming from captive populations. A male with a harem defends a territory. Females lay a clutch of 9-20 eggs each, April through June. Once the male starts sitting, many females move away, sometimes pairing with other males to lay more clutches.\n\nIncubation and raising young is the male's task. The nest is a shallow scrape usually located nest to a bush. It is simply lined with leaves, grass and bark. In general, 15-25 dark green to avocado-black eggs may be layed in one nest. Incubation may take up to 60 days, depending on how much time the male must have to feed and drink. Chicks are precocial and leave the nest after 2-3 days to follow the male. Young birds are capable of reproduction at 2 to 3 years of age.\n\nLongevity is 5 to 10 years in the wild.
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-The echidna and the playpus are the only mammals to lay eggs.\n-Giraffes have an eight inch tongue.\n-98% of human DNA is the same as a chimpanzee.\n-Lungfish can survive up to 2 years in dry mud.
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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 with the classification scheme.\n\nPhylogenetically, Mammalia is defined as all descendants of the most recent common ancestor of monotremes (e.g., echidnas and platypuses) and therian mammals (marsupials and placentals).
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The universe is so huge that it would be a common sense thing to belive that life exists else where. But it would be a question how that animals might have formed?. How will they differ from us? How will they reproduce or reproduce in first place? or will they ever die? will their genetic code read lines of death or aging?
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Prototheria = the monotremes, only egg-laying mammals. Echidnas and platypus.\n\nMetatheria = the marsupials, mammals that carry their young in a pouch (well, some don't have pouches, the important characteristic is that their uterine gestation is very short).\n\nEutheria = placental mammals, with full development of the young within the mother's womb.
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Not counting the related bandicoots, there are four species of officially endangered wallabies in Australia. They are the Banded Hare-Wallaby, the Bridled Nailtail Wallaby, the Prosperine Rock-wallaby, and the Rufous Hare-wallaby (its cousin, the Eastern Hare-wallaby, is extinct).\n\nBanded Hare-wallaby: A tiny gray kangaroo less than three feet high. Its population is restricted to Bernier and Dorre islands in Shark Bay, Western Australia. Exact numbers are unknown; it failed to reestablish itself on Dirk Hartog Island in the 1970s. \n\nBridled Nailtail-wallaby: Gets its name from a horny spur on the end of its tail. Only known populations is near the town of Dingo in Queensland, Australia. In the early 1980s, it was numbered at 800 individuals.\n\nProsperine Rock-wallaby: Small but quite agile; jumps 13 feet. Remains near Prosperine, northeast coastal Queensland. No estimates of its population.\n\nWhere Do Kangaroos Live?\nKangaroos live throughout inland Australia and occupy mixed habitats of grasslands, mallee scrubs, open shrub lands, mulga country, and desert.\n\nWhat Do Kangaroos Feed On?\nThe red kangaroo eats during the night on a wide variety of grasses and low plants, though sometimes this grazing period starts in the late evening and ends early in the morning When water is available the kangaroo will drink. But if it obtains enough green food, it does not need to do so.\n\nCan You Tell Me How Kangaroos Communicate?\nKangaroos thump the ground with their feet to warn other members of its group that there is danger, for example a dingo attack.\nHow's the Breeding Done?\n\nKangaroo females are mature after around eighteen months. Males are mature after about two years. There is one young kangaroo, or a joey, although a mother can care for more than a single joey at a time. Kangaroo joeys remain in the pouch for 5-6 months. When they emerge, they look just like their parents, only they are smaller.\nAfter 2-3 months, they gradually spend more time away from the pouch, returning to its safety when they feel threatened. Joeys are usually weaned at around 1 year of age, but they will generally stay close to their mother for another 6 months.\n\nKangaroo Boxing!\nWhen male kangaroos fight, they look kind of like they are boxing. Standing on their hind legs, they try to knock the other kangaroo off balance. If that doesn't work, the kangaroos stay up on their tails and kick with their hind legs. Male kangaroos usually fought over female kangaroos. The largest male in a group will fight against other males to show and prove that he is the strongest and largest.
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The mating season, lasting from September to October, is followed by a nine-month gestation period after which 600- 700 eggs are laid and wrapped in a silky cocoon which the female, alone, guards aggressively. The mother tolerates the babies for a short period of time in which she might even feed them regurgitated food, but very briefly. Within a matter of weeks, or certainly by the time the female has her next molt, the babies are on their own. The mortality rate is very high and ants are a major menace. The life span of the female is thought to be 15- 25 years and possibly more than that. The male lives a much shorter time, not only because the female sometimes eats him, but more frequently because he does not molt correctly, or cannot escape his molt for some reason. Also, the male is usually the one seeking to mate, and so is more exposed to predictors.
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just like most bugs they lay eggs. Then go through a larval and pupal, until they become adults
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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.
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It occurs in horses, whales, moles, mole-rats, hyenas, and perhaps other animals. (In the great fin whale, in fact, the hymen is not completely destroyed until childbirth.)
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the exact same as most animals mate\n\nAfter mating, the female beetles pack bits of decaying wood into a pile. She then sticks her ovipositor into the pile and lays an egg. Usually this is in a stump, log, or dead tree.\n\nThe egg hatches in three to four months, and a larva immediately starts to feed on the dead wood where it is born. It eats and grows for about eight months.
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Dolphins are mammals, first of all, which means that they reproduce and female give births to offsprings (babies).\n\nThe babies stay often with their mothers until they are capable of hunting by themselves.\n\nBy then, they are more independent but stay in groups.\nLater on as adults, dolphins find mates and reproduce and give birth again to dolphins.\n\nLife cycle repeats...\n\n\nFor more info:\n\nhttp://library.thinkquest.org/J0110164/Life%20of%20the%20dolphin/life%20cycle.htm
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It was long considered that the marsupial reproductive strategy was somehow inferior to that of placental mammals, and that in direct competition the marsupials would be wiped out by their placental cousins, however the metatherian method of producing highly altricial young and raising them in a pouch actually can be quite advantageous in certain situations.\n\nIt requires less metabolic investment from the mother per offspring.  Because the reproductive tracts are not taken up with incubating the young, it is possible to have more than one set of offspring 'in the works' at any one time - in some marsupials, there can be juveniles running about near the mother, a set of joeys in the pouch, another set in the uterus, and in some cases, even another set in the form of a fertilized egg awaiting implantation.  This means there can be essentially four sets of offspring on the assembly line at any one time, giving an impressive ability to reproduce quickly in ideal circumstances.\n\nHowever, if circumstances are not ideal, the mother can also abandon one or more sets of these offspring without losing much metabolic investment.\n\nMarsupials in South America have survived, and in some cases thrived, even amongst placental competition.  So it's not a foregone conclusion that marsupials vs. placental = marsupial loss.\n\nThe Virginia opossum, Didelphis virginiana is able to survive and thrive in North America both because of this rapid reproductive potential, and because it is an adaptable and versatile generalist.  An omnivore, it will eat darned near anything, from bugs and worms to fruit and corn to garbage.  \n\nWhile human development and expansion has come at a cost to a great many animal species, it has been quite beneficial to quite a few other species.  Many of these species are also generalists, and are able to live by essentially scavenging off of human excess and development, and using human created environments to hide and protect, while also taking advantage of the fact that humans have driven out or killed most of their predators.\n\nAmongst the generalists that have benefited by association with mankind there are raccoons, tree squirrels, coyotes, rats, rock doves (pigeons), gulls, cockroaches and, of course, opossums.\n\nBasically, a lot of these organisms thrive because they live on the same kind of junk food we crave.
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A mammal is a type of animal, generally noted for giving live birth and where the mothers feed the babies with milk from their breasts. (Or Mammaries.) Humans are mammals since human moms breastfeed their children.