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Yes they do, though they are hard to see. See the article from Discover Mag for some interesting facts - including about belly buttons - in the link below.
Rats were not delivered in a different way - they are mammals and have an umbilical cord as well.
All mammals have bellybuttons
What else can I help you with?
Do hamsters have belly buttons?
Yes, hamsters do have belly buttons
Why do penguins have belly buttons?
they have belly buttons because they have them okii
Do all things have belly buttons?
Things generally don't have belly buttons. All placental mammals have belly buttons.
Do gorrillas have belly buttons?
Yes in fact all mammals have belly buttons which is super fascinating but they are straight unlike our human belly buttons!
How come Chinese people don't have belly buttons?
Oh, but they do have belly buttons.
Do giaraffes have belly buttons?
Yes! all mammals have belly buttons. When we are growing in our mothers belly we are joint by an umbilical cord then when we have been born the umbilical cord gets cut and that is why we have belly buttons.
Does belly buttons grows on trees?
No. Belly buttons are part of human bodies, and as such, do not grow on trees.
Do your belly buttons started going in when you are pregnant how is your belly buttons supposed to look when you are pregnant?
When your pregnant your belly gets bigger,and your belly button just sticks out there.
Do squid have belly buttons?
No
Do alagaters have belly buttons?
no
Do pigs have belly buttons?
All mammals have belly buttons so yes pigs have belly buttons and so do elephants.
Why do some people have different belly buttons?
mOTERS AND MOTHERS BEFORE HAVE ALWAYS HAD DIFFEREN BELLY BUTTONS. MOST DOCTORS DO NOT KNOW HOWTO TIE BELLY BUTTONS PROERLY.
