According to the pokewikipedia (oh god what have I come to)
Physiology
This tiny brown Pokémon's most famous feature is that it seems to be perpetually buried within the earth, usually having only its head visible. Another one of its most distinguishing characteristics is its big pink nose.
( Lampito rise with the moon, go to bed with the sun, Sun 14 Feb 2010, 22:29, archived)

Pokewikipedia? Not Bulbapedia? What are you, some kind of cunt?

( Bob Todd whee, Sun 14 Feb 2010, 22:31, archived)

Yeah it was from Bulbapedia.

( Lampito rise with the moon, go to bed with the sun, Sun 14 Feb 2010, 22:34, archived)

Okay, carry on.

( Bob Todd whee, Sun 14 Feb 2010, 22:36, archived)

It's a debate that still rages on.
www.b3tards.com/u/ee0d0a7dc532064da1b6/diglett.jpg
( JessAction Give me all your expensive brandy and hubcaps., Sun 14 Feb 2010, 22:35, archived)

CONTROVERSY
How are you?
( Lampito rise with the moon, go to bed with the sun, Sun 14 Feb 2010, 22:39, archived)

Mildly NSFW
saladbowl.deviantart.com/art/Dugtrio-Underneath-the-Surface-95213791
( Bob Todd whee, Sun 14 Feb 2010, 22:39, archived)

Apparently diglets have feet.
Thank you, Bulbapaedia!
( Lampito rise with the moon, go to bed with the sun, Sun 14 Feb 2010, 22:44, archived)

*click*

( St. Defenestration The REAL one, Sun 14 Feb 2010, 22:46, archived)