Kangaroos do not have litters.
Kangaroos commonly give birth to just one joey at a time, but twins have been recorded.
Female kangaroos of reproductive age are in an almost constant state of pregnancy. They have the ability to indefinitely suspend the development of an embryo (called embryonic diapause) until conditions are right for it to be born, e.g. there is enough food to support an increase in the population.
Kangaroos can also have two joeys of differing ages at one time - one in the pouch, and one almost grown one. The mother kangaroo is able to produce two diffferent kinds of milk to meet the nutritional needs of each one.
Like other kangaroos, a Grey kangaroo will usually have just one joey at a time, although twins have been reported. Also like other larger kangaroos, the female can have two joeys of different ages in her pouch at the same time, feeding them different milk to meet their needs.
It can have multiple in one breeding season, but only one makes it to the nipple and survives.
Koalas produce a single offspring, once a year. On very rare occasions, they may produce twins.
They produce up to 2 offspring but don't produce to many in a whole life time
A tiger can produce on average 2-6 cubs in a litter.
Koalas produce a single offspring, just once a year. On rare occasions, they may produce twins.
2-6 offspring
2
They produce many offspring
Eagles mostly nest once a year in late winter to early spring. The normal number of eaglets in the nest is two.
Koalas produce a single offspring, once a year. On very rare occasions, they may produce twins.
Chlamydiae reproduce by binary fission, producing two offspring.
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