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Curious Kids: do all animals have belly buttons?
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Smug Bug - Did you know reptiles have "belly buttons"?... | Facebook
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 Have Belly Buttons? Here's The Answer - DodoWell - The Dodo
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Curious Kids: do all animals have belly buttons?
What animals other than primates have belly buttons? - Quora
Everything You Need To Know About Belly Buttons In...
Dogs do have belly buttons - but they aren't innies or outies like ours - Mirror Online
Do other mammals have umbilical cords? If yes, what do those animals do about them? Do they cut them off like humans do? - Quora
Do Dogs Have Belly Buttons? Shocking Revelation!
Do Dogs Have Belly Buttons? (Spoiler Alert - The Answer Is Adorable) - Indie88
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