Final answer:
The odd creature Sphere considered odd in Spaceland was a therianthrope, part human and part animal. The behavior of this creature is not specifically described.
Step-by-step explanation:
The odd creature Sphere told about in Spaceland was a therianthrope, which is a creature that is part human and part animal. The behavior of this creature is not specifically described in the given information, but the presence of a therianthrope suggests a complex system of shamanistic belief. This creature may have been seen as a supernatural or mythical being, with behaviors and characteristics associated with both humans and animals.