The best replacement for cats is dogs.

The best alternatives to cats are rated as following:
★★★★★  dogs
★★  dogs movie
★★  humans
★  dogs as pets
★  dogs game
★  dogs poll
★  dogs smarter
★  dog
★  dogs video
★  dogs essay
★  snakes
★  rats
★  crows
★  dogs better
★  kittens
★  dogs yahoo answers
  female cats
  one
  felines
  cats
  cat's
  dogs cleaner
  dogs yahoo
  dogs youtube
  dogs facts
  outdoor cats
  squirrels
  dogs intelligence
  dogs more popular
  dogs survey
  lions
  dogs pets
  funny dogs
  babies
  dogs persuasive speech
  dogs videos
  dogs funny
  dogs quotes
  christmas trees
  small dogs
  dogs more intelligent
  rabbits
  dogs for sale
  kids
  dogs games
  dogs debate
  dogs film
  male cats
  dogs trust
  mice
  dogs wiki
  small cats
  1
  dogs and rabbits
  short hair cats

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

Other search terms related to cats and their ratings are:
★★★★★ allergies
★★★★★ worms
★★★★★ dander
★ collars
★ rabies
★ fleas
allergy
dandruff
You have in mind a companion for cats and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of cats in all years. Click on graph for more.
cats
dogs
dogs movie