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Animal Companions | Construct Companions | Eidolons | Familiar Abilities | Specific Familiars | Undead Companions

There is a Legacy version here.

PFS StandardAnimal Companion Feat 1

Druid Ranger 
Source Player Core pg. 127
Prerequisites [Druid] animal order

You gain the service of a young animal companion that travels with you on your adventures and obeys any simple commands you give it to the best of its abilities. See Animal Companions for more information.

Ranger: When you Hunt Prey, your animal companion gains the action's benefits and your hunter's edge benefit if you have one.

Animal Companion Leads To...

Instinctive Support, Masterful Companion, Mature Animal Companion (Druid), Mature Animal Companion (Ranger), Side by Side (Druid), Stealthy Companion