gus_demo : lifeform : column analysis
columnforeign refsprimary refsminvalmaxvalmedianmeanstand devnonnullsno nullsminsizemaxsizetypedefacto type
lifeform_idcritter.lifeform_id:101653.5001.7086111int(11)int(1)
name6139varchar(11)varchar(9)
genus6148varchar(10)varchar(8)
species61411varchar(14)varchar(11)
population0521.1671.8636111int(11)int(1)
wikipedia_url613338varchar(49)varchar(38)
description5749varchar(63)varchar(49)
image_filename61623varchar(29)varchar(23)

Read the documentation.