This article is a Charm Animal is a spell-like ability that Rangers have, Archers excepted.
Animals are charmed for 20 rounds if they fail a save vs spells (blocked by Magic Resistance, power level 2 ability and it's a neutral charm, so failure doesn't turn creatures hostile).
Enemies considered animals[]
This is a (mostly complete) list of enemies considered animals for the purpose of this ability.
Do note, however, that: a) Most animals with 1 Hit Dice are excluded (such as cats, rabbits, squirrels, birds and bats), but they are still animals, of course; b) A few animals (most of them in BG2EE) are immune to charm (they'll be noted as such); c) Two notable creatures are still incorrectly considered animals in the EEs (Thaxll'ssillyia, who's immune to charm, and Wizard Eyes); and d) All spiders are considered monsters, not animals, so they're not "missing" from the list.
Animals in BGEE (including SoD):
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A Black Bear being charmed by a C/R.
-Bears (Black, Brown, Cave, Grizzly, Mountain, Polar)
-Beetles (Boring, Bombardier, Fire, Rhinoceros)
-Boars (Old, White, Wild)
-Displacer Beasts (regular and Pack Lord)
-Dogs (regular, War and Wild)
-Hellcats (however, they're immune to charm effects, as they have demon immunities)
-Lions (regular and Mountain)
-Panthers
-Snakes
-Wolves (regular, Dire and Winter)
-Worgs
Animals in BG2EE:
-Bears (Black, Brown, Cave, Grizzly, Mountain)
-Boalisks (only found in the Black Pits II)
-Celestial Hounds (found in Dorn's ToB quest, but they're immune to charm effects)
-Cheetahs
-Dogs (regular, Wild and War)
-Fell Cats (however, they're immune to charm effects)
-Jaguars
-Leopards
-Lions (regular, Mountain, Spotted and the Beast Master's Tabitha, who alone is immune to charm effects)
-Lynxes (Giant)
-Panthers (regular and Drizzt's Guenhwyvar, who alone is immune to charm effects)
-Snakes (Giant)
-Tigers (Wild)
-Wolves (regular, Dire, Winter and Aranthis, the companion of one of the Watcher's Keep Maze's Tieflings, but it alone is immune to charm effects)
-Worgs
In-Game Description[]
| “ | This spell affects any single animal it is cast upon. The animal is allowed a Saving Throw vs. Spell to negate the effect. | ” |