• Before making a single edit, Tropedia EXPECTS our site policy and manual of style to be followed. Failure to do so may result in deletion of contributions and blocks of users who refuse to learn to do so. Our policies can be reviewed here.
  • All images MUST now have proper attribution, those who neglect to assign at least the "fair use" licensing to an image may have it deleted. All new pages should use the preloadable templates feature on the edit page to add the appropriate basic page markup. Pages that don't do this will be subject to deletion, with or without explanation.
  • All new trope pages will be made with the "Trope Workshop" found on the "Troper Tools" menu and worked on until they have at least three examples. The Trope workshop specific templates can then be removed and it will be regarded as a regular trope page after being moved to the Main namespace. THIS SHOULD BE WORKING NOW, REPORT ANY ISSUES TO Janna2000, SelfCloak or RRabbit42. DON'T MAKE PAGES MANUALLY UNLESS A TEMPLATE IS BROKEN, AND REPORT IT THAT IS THE CASE. PAGES WILL BE DELETED OTHERWISE IF THEY ARE MISSING BASIC MARKUP.


WikEd fancyquotes.pngQuotesBug-silk.pngHeadscratchersIcons-mini-icon extension.gifPlaying WithUseful NotesMagnifier.pngAnalysisPhoto link.pngImage LinksHaiku-wide-icon.pngHaikuLaconic
Exposed-animal-bellybutton 1102.png

Sometimes when you draw animals on any level of anthropomorphism from Nearly-Normal Animal to Petting Zoo People, but especially Civilized Animals, Funny Animals, Petting Zoo People, you just give them a humanlike bellybutton, whether "innie" or "outie," that can be seen through their fur, feathers, or scales.

While some cartoon animals have humanlike bellybuttons, Real Life animals don't have navels like this. Placental mammals beside humans are born with a navel that looks very much like a scar.

Other animals, like monotreme mammals, all birds, most reptiles, amphibians, and fish, most insects, some molluscs, and some arachnids don't have navels, as they are oviparous (were born from eggs). Some squamates (the reptile group that includes lizards, snakes, and amphisbaenians) like rattlesnakes, sea snakes, slowworms, and garter snakes, are either viviparous or ovoviviparous (give birth to live young), as are most sharks, live-bearing bony fishes, some species of scorpion, cockroaches, and velvet worms. They don't have navels as navels are exclusive to placental mammals.

A subtrope of Funny Animal Anatomy and Anatomy Anomaly. See also Nonhumans Lack Attributes.

Examples of Exposed Animal Bellybutton include:


  • Subverted in Garfield. The eponymous cat notices a black spot on his belly in the mirror and remarks "I didn't know I had a belly button". Said spot turns out to be a bug, which promptly flies away.
    • Though played straight with some animal characters who appeared in some strips of this comic, especially bigger ones.
  • Pig from Pearls Before Swine.
  • The title character of Pogo.
  • Nearly all the characters in Krazy Kat.
  • When drawn by Steven Butler, Princess Sally of Sonic the Hedgehog tends to have one.


  • Rango the chameleon has a bellybutton.
  • Jiminy Cricket is shown to have a bellybutton in Pinocchio.


  • In Richard Scarry's Best Little Word Book Ever, the last page gives Huckle Cat this.

New Media

Video Games

  • Crash Bandicoot has a bellybutton.
  • This trope is mentioned and subverted in Chrono Trigger. You can try to run from the prison by faking sickness. If Frog is the one faking sickness, he says his bellybutton hurts. After beating guards, he calls them fools for not knowing that frogs don't have bellybuttons.
  • Krystal has one, visible in Star Fox Adventures.
  • The Donkey Kong series seems inconsistent as to whether or not Kongs have them. In some games, they don't have them even when some reptilian characters do.
  • Rouge the Bat from the Sonic the Hedgehog series, although only when she's wearing alternate costumes.
  • Shazza the Dingo from the Ty the Tasmanian Tiger series has a belly button, which she always exposes due to Australia's heat.

Web Comics

Western Animation