Mammal type is probably the most common, basic, and intuitive type. They are weak to Cnidarian, and Martial. They are strong against only Fungus, and their attacks are resisted by Cnidarian, Metal, and Rock. Some notable members of this type include:
Mammal types are (as of this time) the most populous type by far.
Some decent moves of this type are Claw Cutter (75pow, hi-crit), Incise (80pow, hi-crit), and Charge! (90pow, recoil).
The split evolution hamster is overrepresented on this list because its index number is low, and their sprites are finished. I may return to this page to add variety at a later date.