Fallout: New Vegas Creatures

Arthropods
All of these creatures are affected by the Entomologist, Bug Stomper, and Tribal Wisdom perks.

Humanoid

 * ¹ Affected by Purifier and Abominable.
 * ² Affected by Mutant Massacrer.

Non-humanoid
All creatures in the group are considered animals for Animal Friend, except for yao guai and centaurs. All creatures in this section are considered animals for Animal Control.
 * ¹ Affected by Purifier and Abominable.

Plant-based creatures
All mutated plant creatures are affected by Purifier and Abominable.

Reptiles

 * ¹ Affected by Purifier and Abominable.
 * ² Affected by Animal Friend, Hunter and Animal Control.
 * ³ Affected by Animal Control.
 * 4 Are not affected by the Animal Friend perk.

Fish

 * Fish

Avians

 * Raven

Extraterrestrials

 * Alien