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No, kangaroos are not placental mammals, and the belly button is a vestage of where the mother's placenta connects to the fetus.
No, kangaroos are not placental mammals, meaning that they are not connected via an umbilical cord when they are developing in their mother's womb. The bellybutton is merely a scar left from the where the umbilical cord was at. All placental mammals like humans, dogs, cats, etc. have bellybuttons, while marsupials and monotremes, (egg laying mammals, which consists of only 2 species, the platypus and echidna) have no bellybuttons because they are not connected to their mother by an umbilical cord.
Wiki User
∙ 7y ago
Wiki User
∙ 13y agoPlatypus's do not have belly buttons because, although they are mammels, they are hatched in eggs, and therefore have no placenta, thus no navel.
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Why is your belly button called a belly button?
Because it somewhat resembles a button and it is on your belly.
What did body part did Alfred Hitchcock not have?
He was rumored to not have a belly button.
What kind of belly button does SpongeBob have?
Out Belly Button
What part of the kangaroo is eatable?
the belly.
What is a belly button ring?
A belly button ring is a body piercing placed in a cauterized area of the belly button.
Do boys have different belly buttons than girls?
No, a belly button is a belly button.
Can you pierce your belly button with a belly button ring?
yeye
How do you say belly button in french?
le nombril is the name for the belly button in French.
What causes belly button dandruff?
There is no such thing as belly button dandfruff, you probably just need to clean the inside of your belly button.
What is a belly button bar?
Its the jewelry that goes into a belly button piercing.
Which side is your belly button on?
Your belly button is in your middle on the bottom side.
Can you have a belly button piercing if your belly button is an outtie?
Yes you still can.
