Assertion: echidna's number | /r/CapableOf | compare to the 40,000 of the platypus
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text: The long-beaked echidnas have around 2,000 electroreceptors in the snout, but the short-beaked echidna only has around 400, grouped in the extreme end (these numbers compare to the 40,000 of the platypus, who uses the ability much more since it spends a lot of its time in water).