The best replacement for frog is toad.

The best alternatives to frog are rated as following:
★★★★★  toad
★★  horse
★  cameleon
★  horse illusion
★  vtech
★  chameleon
★  fly
★  toad how do you know
★  orange
★  lizard
  toad difference
  cane toad
  salamander
  strawberry
  turtle
  monkey
  human respiratory system
  tadpole
  toad tadpoles
  axel f
  toads
  human reproductive system
  pig frog
  toad tadpole
  ocean forest
  ideo
  poison dart frog
  frog
  bee
  an orange
  axel
  rat
  gecko

Your alternative for frog is not listed? Suggest!
Speaking about frog, one probably shouldn't forget about betta.

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



Google Trends

Scale is based on the average worldwide traffic of frog in all years. Click on graph for more.
frog
toad
horse