Pathfinder Animal Companion Rules

Animal companions occupy one of the more mechanically rich corners of the Pathfinder ruleset — a loyal bear at a Ranger's side isn't just flavor, it's a second action economy, a flanking partner, and occasionally the reason the party survives a particularly bad initiative roll. This page covers how animal companions are acquired, how they function in and out of combat, the scenarios that most often trip up players and GMs, and where the rules draw hard lines between what an animal companion can and cannot do. The rules referenced here draw from the Pathfinder Second Edition Core Rulebook published by Paizo Inc.

Definition and scope

An animal companion is a creature bonded to a player character through a class feature, not merely an animal that follows the character around because it likes them. In Pathfinder 2E, the primary classes that gain animal companions through their class chassis are the Ranger (via the Animal Companion feat at level 1), the Druid (via the Animal Order), and the Cavalier archetype. The Summoner's eidolon is mechanically adjacent but constitutes a separate rules subsystem entirely.

The companion begins as a young creature with a specific set of ability scores, speeds, attacks, and special abilities determined by its type — a wolf, horse, cat, bird, and roughly 20 additional stat-block options appear in the Core Rulebook. The animal's type selection is permanent at the time of bonding; switching to a different species later requires retraining, which follows the standard retraining rules described in the Pathfinder core system overview.

How it works

Animal companions advance through four developmental stages: young, mature, nimble or savage (a branching choice), and specialized or incredible. At each stage, the creature gains improved statistics and new options.

The most structurally important element is how the companion acts in combat. In Pathfinder 2E, an animal companion does not act on its own initiative. Instead, it receives 2 actions on the player character's turn through the Command an Animal action, which costs 1 of the handler's 3 actions. If the handler doesn't Command the companion, the animal can only use the Defend action — staying in place and gaining a +2 circumstance bonus to AC.

A breakdown of the companion's action structure on any given turn:

1. Handler spends 1 action to Command → companion receives 2 actions, chosen from its available action list
2. Handler does not Command → companion uses the Defend action automatically
3. Handler is incapacitated or dead → companion acts on the Avoid Notice or Defend action at GM discretion, no longer receiving commands
4. Support ability → certain companions grant a passive benefit (such as a horse granting +2 damage on mounted strikes) without requiring a Command, if the companion is adjacent and meets positioning requirements

The Pathfinder rules index provides navigation to the full feat trees that modify this action economy, including the Mature Animal Companion feat, which allows the companion to use 2 actions independently if not Commanded.

Common scenarios

Mounted vs. unmounted companions represent one of the sharpest mechanical splits. A Large companion (horses, large cats, dinosaurs above Small size) can be ridden, which consolidates movement between handler and companion and unlocks mounted combat feats. A Small or Medium companion cannot be ridden by a Medium character and functions purely as a combat ally on foot.

Flanking with a companion works exactly as flanking with any other ally — the companion must be on the opposite side of the target from the handler, and both must be able to see the target. The companion's relatively modest attack bonus at low levels means flanking is often its most reliable combat contribution in the first four character levels.

Companion death carries real mechanical weight. A companion reduced to 0 HP is dying and follows the standard dying rules. A companion that reaches dying 4 is dead and cannot be raised through standard resurrection magic — the bond must be re-established, which requires a week of downtime and functions as retraining under the rules in the Core Rulebook (Paizo, CRB p. 481).

Decision boundaries

The rules are explicit about what an animal companion is not: it is not a summoned creature, not a minion in the minion trait sense, and not subject to effects that target minions specifically. This distinction matters when spells or abilities reference "minions" — an animal companion is immune to those effects unless the ability explicitly names animal companions.

The animal companion cannot use equipment unless it has a specific ability that permits it (some specialized companions gain the ability to wear barding, which is the companion-specific armor system). Barding costs twice the standard armor price and weighs twice as much (Paizo CRB, Equipment chapter, p. 275).

Intelligence is the other hard boundary. Animal companions have a fixed Intelligence score (typically 2, occasionally 4 with advancement) and cannot speak, read, or use items requiring mental activation. A companion can be trained to perform tricks through the Command an Animal skill action (Paizo CRB, p. 249), but trick performance is distinct from intelligent problem-solving. An animal companion will not, on its own initiative, unlock a door, disarm a trap, or negotiate a ceasefire — no matter how cinematically appropriate that might seem.

For deeper questions about how these subsystems interact with multiclassing and archetype stacking, the Pathfinder FAQ resource covers the most common edge cases in structured form.