The best replacement for squirrels is rats.

The best alternatives to squirrels are rated as following:
★★★★★  rats
★★★★★  chipmunks
★★  cats
★★  snakes
★  grey squirrels
★  sugar gliders
★  tediz
★  teddy bears
  ground squirrels
  pigeons
  transformice
  raccoons
  bird feeders
  red squirrels
  brown squirrels
  tree squirrels
  rabbits
  prairie dogs
  skunks
  gray squirrels
  sugar glider
  bird feeder
  gophers

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

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



Google Trends

Scale is based on the average worldwide traffic of squirrels in all years. Click on graph for more.
squirrels
rats
chipmunks