The best replacement for human is animal.

The best alternatives to human are rated as following:
★★★★★  animal
★★★  computer
★★★  cat
★★  dancer
★★  computer chess
★★  robot ping pong
★★  are we dancers
★★  machine
★  gnome warlock
★  dwarf paladin
★  night elf rogue
★  humans
★  zombie
★  worgen hunter
★  human
★  night elf hunter
★  animal communication
★  gorilla
★  animals
★  computer jeopardy
★  wolf
★  gnome mage
★  robot
★  human chess
★  humane
★  dog years
★  worgen rogue
★  physical geography
★  cheetah
★  dog
  alien
  cat years
  human being
  robots
  draenei paladin
  bear
  vampire
  ape
  worgen warlock
  dog mouth bacteria
  norn warrior
  worgen
  chimpanzee
  gnome rogue
  gnome priest
  are you dancer
  undead rogue
  orcs
  neanderthal
  technology
  are we dancer
  divine
  animal bones
  worgen warrior
  chimp strength
  orc
  night elf warrior
  are we denser
  synthetic hair
  artificial intelligence
  alien games
  cybernetic too human
  kangaroo
  apes
  person
  chimp
  night elf priest
  hollow dark souls
  are we dancing

Your alternative for human is not listed? Suggest!
Speaking about human, one probably shouldn't forget about dog face.

Other search terms related to human and their ratings are:
★★★★★ dog face
You have in mind a companion for human and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of human in all years. Click on graph for more.
human
animal
computer