Did you know lemon sharks are born alive with an umbilical cord. This is called Viviparity ( Viviparous). This "belly button" is actual… | Belly button, Shark, Scar
Do Dogs And Cats Have Belly Buttons?
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Dogs do have belly buttons - but they aren't innies or outies like ours - Mirror Online
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Curious Kids: do all animals have belly buttons?
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Do Birds Have Belly Buttons? | Bird Spot
Do other mammals have umbilical cords? If yes, what do those animals do about them? Do they cut them off like humans do? - Quora
Question of the week: Do other animals have belly buttons? | UCL Researchers in Museums
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Do Dogs Have Belly Buttons?
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Do animals have belly buttons? | Kitesurfing Forums, page 1
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Do Dogs Have Belly Buttons? Here's The Answer - DodoWell - The Dodo
