Non-humanoid
The term non-humanoid designated lifeforms which did not share certain morphological, biological, and physiological traits with humanoids and could exist in a wide variety of types. 

Relations among humanoid species were considered easier than between a humanoid and a non-humanoid one since those lacked a common point of reference to base communications on. ()

Animals were considered to be non-humanoid. () The term "alien" was also sometime used by humanoids to describe non-humanoids. ()

A nitrogen sulfide atmosphere was considered an indicator of non-humanoid life. ()

See also 
 Non-humanoid species
 Unnamed non-humanoids
 Non-humanoid exobiology
Lifeform classifications