The best replacement for mammals is reptiles.

The best alternatives to mammals are rated as following:
★★★★★  reptiles
★★★★  fish
★★★★  birds
★★★★  dinos
★★★  dinosaurs
★★  animals
★★  marsupials
★  amphibians
★  primates
★  non mammals
★  dinosaurs first
  vertebrates
  non-mammals
  insects
  other animals

Your alternative for mammals is not listed? Suggest!


No companions for mammals have been suggested so far.
You have in mind a companion for mammals and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of mammals in all years. Click on graph for more.
mammals
reptiles
fish