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The answer to your question is unknown to everybody, even the most highly qualified scientists. The reason for this is that there are still some animal species that are unknown. Of course, we can estimate but we will never know for sure, there can always be one more type of animal. Also, Earth is very vague. It would be very hard to calculate the number of anything on Earth, sense there is so much. If you absolutely need and answer, Google how many know species of animals there are, that may help.

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14y ago

What else can I help you with?