how do the y reproduce?
Males can produce up to 16 offspring over their lifetime, while females average four mating seasons and 12 offspring.
Tasmanian devil
Females start to breed when they reach sexual maturity, typically in their second year. At this point, they become fertile once a year, producing multiple ova while in heat. As prey is most abundant in spring and early summer, the devil's reproductive cycle starts in March or April so that the end of the weaning period coincides with the maximisation of food supplies in the wild for the newly roaming young devils. 

Occurring in March, mating takes places in sheltered locations during both day and night. Males fight over females in the breeding season, and female devils will mate with the dominant male. Females can ovulate up to three times in a 21-day period, and copulation can take five days; one instance of a couple being in the mating den for eight days has been recorded. Devils are not monogamous, and females will mate with several males if not guarded after mating; males also reproduce with several females during a season. Females have been shown to be selective in an attempt to 
why is the platypus in the kingdom animalia Because they are multicellular eukaryotic organisms could you describe it? Dense, brown waterproof fur; webbed feet; elongated snout. and where is it found? Small streams and rivers at Tasmania and Australia how does it protect itself? The male's ankle spurs delivers venom for defence when was it discovered? It was  first encountered by Europeans in 1798 what is the other creature the is found in above mentioned rivers? Humpback whales and a minke whale have been recorded feeding in the River Derwent in Tasmania and similarly what creature is found on the above mentioned island? Tasmanian devil
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Tasmanian devil [SEP] Reproduction
Females start to breed when they reach sexual maturity, typically in their second year. At this point, they become fertile once a year, producing multiple ova while in heat. As prey is most abundant in spring and early summer, the devil's reproductive cycle starts in March or April so that the end of the weaning period coincides with the maximisation of food supplies in the wild for the newly roaming young devils. Occurring in March, mating takes places in sheltered locations during both day and night. Males fight over females in the breeding season, and female devils will mate with the dominant male.