After two encounters with Jabberwocks that occurred in a very short span of time, two harmless looking ?'s that turned out to be something to run away from very quickly, I wondered…
Why can’t we differentiate the size of a creature from it’s thermal signature? Here’s my suggestion.
. = Small creature, such as a squirrel, a rabbit, certain spiders, fungaloid spores perhaps?
? = Medium sized creatures such as your run of the mill zombies, deer, moose, other creatures about that size.
! = Large creatures to run away from very quickly, such as bears, JABBERWOCKS, stuff like that.