Beast Strength Chart

All monsters in the game are part of a set of families. Some families are more adept at killing other families. For example, Beasts are better at killing Lizards, which are better at killing Vermin, and so on. You can see that it loops at the end.

Beastmaster

As a Beastmaster, it is your job to learn these family weaknesses and exploit them by choosing a pet that's better at killing your chosen prey. Note that not all of the mobs below are charmable.
The effect of properly following this chart is intimidation. Intimidation causes your prey to lose a turn, so to speak, and it doesn't attack. Intimidation messages appear in your chat log as "The Steppe Hare is intimidated by the Strolling Sapling's presence" (But the enemy must be attacking the pet that has this trait to be intimidated- "presence" isn't good enough). It functions like paralysis, and stacks with any other paralysis effects (such as from the spell Paralyze or Ice Spikes). Beastmasters themselves eventually learn many of these "Killer Traits".

Blue Mage

As a Blue Mage, it is your job to learn these family weaknesses and exploit them by using abilities learned from a family that's better at killing your chosen prey. For example, by using a spell learned from a mob of the Lizard Type against a mob of the Vermin Type, you can maximize your spell accuracy and damage. See Blue Magic Monster Correlation Chart. Also, by setting certain combinations of spells, you can obtain various killer effects.

First Ecosystem

Beasts Behemoths Buffalo Cerberuses Coeurls Dhalmels Gnoles Manticores Marids Opo-opo Rabbits Rams Sheep Tigers Yztargs

Lizards Adamantoises Bugards Efts Gabbraths Lizards Matamatas Peiste Raptors Wivres

Vermin Antlions Apian Beasts Bees Beetles Bztavians Chapuli Chigoes Crawlers Diremites Flies Gnats Ladybugs Mantids Scorpions Spiders Twitherym Wamoura Wamouracampa

Plantoids Belladonnas Flytraps Funguars Goobbues Leafkin Mandragora Morbols Panopts Rafflesia Sabotenders Saplings Snapweeds Treants Yggreants

Second Ecosystem

Aquans Crabs Craklaws Orobon Pteraketos Pugils Rockfins Ruszors Sea Monks Toads Uragnites

Amorphs Acuexes Botuli Flans Hecteyes Leeches Sandworms Slimes Slugs Worms

Birds Amphipteres Apkallu Bat Trios Birds Cockatrices Colibri Giant Bats Harpeias Hippogryphs Rocs Tulfaires Waktza

Third Ecosystem

Undead Corpselights Corses Doomed Fomor Ghosts Hounds Naraka Qutrub Shadows Skeletons Vampyrs

Arcana Acroliths Bombs Cardians Caturae Clusters Djinn Dolls Evil Weapons Golems Iron Giants Khimairas Magic Pots Mammets Maroliths Mimics Snolls Spheroids

Fourth Ecosystem

Dragon Dragons Hydra Pet Wyverns Puks Wyrms Wyverns Zilant

Demon Ahriman Dark Kindred Dvergr Gallu Gargouilles Imps Soulflayers Tauri

Fifth Ecosystem

Lumorian Aerns Euvhis Hpemdes Phuabos Yovras Xzomits

Luminion Ghrah Zdei

No Ecosystem

Beastmen Vorageans (Clionidae, Limules, Murex, Amoebans) Elementals / Avatars Pixies / Umbrils / Heartwings / Monoceros Archaia / Animated Weapons / Automatons / Biotechnological Weapons / Grimoires Promathia / Lady Lilith / Lilith Ascendant / Shinryu / Provenance Watcher Moogles Objects such as Structures and Tubes All player races