Animal Friend

Animal Friend is a Fallout and Fallout 3 Perk.

=Fallout=
 * Requirements: Level 9, IN 5, Outdoorsman 25%
 * Ranks: 1
 * Benefit: Animals will not attack one of their friends, unless the animal is threatened or attacked first. Exactly what an animal is in this world is open to debate.
 * Note: It has been confirmed that rats are classified as animals by this perk, whereas deathclaws are not.

=Fallout 3=
 * Requirements: Level 10, CH 6
 * Ranks: 2
 * Benefit: At the first rank of this perk, animals simply won’t attack. At the second rank, they will eventually come to your aid in combat, but never against another animal. This perk affects the Dog, Yao Guai, Raider Guard Dog, Mole Rat, and Brahmin.
 * This perk only applies to the animals that are listed in the description, so creatures like Radscorpions, Centaurs, Mirelurks, and Deathclaws are unaffected.
 * Usefulness This is considered one of the best "standard of living" perks, as not having to deal with the duo's of Yao Guai is very beneficial as not being given away by Talon Co. or Raider Guard dogs
 * Bug: If you remove the perk via the console, animals may behave as if you still have the perk.
 * Strategies This perk can also be used to put the player in a strategic point over his/her enemies. For example, the player could find the animal, run far away, pull out a sniper rifle, and snipe out the animal before it gets to him/her.
 * Sidenote This perk can be considered a waste past the first rank, as animal npcs will normally attack hostile non-animal npcs. (At rank 1 the Yao Guai will ignore you and atack enclave, Mister Gutsy, or Radscorpions)

Additional Dialog

 * Tree Father Birch in Oasis explains why animals are in oasis. There appears to be no benefits.