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When first hatched, platypuses weigh barely a couple of grams, or about 0.002 kg. When fully grown, platypuses vary tremendously in size, from just 600grams to 2.4kg. Males are always much larger than females. On average, females are around 800-900 grams (0.8 to 0.9 kg) and males vary from 1.6 to 2.4kg.

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12y ago

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