Garn - massive wolves, found rarely in the savage mountains. Completely fearless - usable as both mounts and war/hunting animals. Orcs and the Mag'har may occasionally sell these.
Frostwolf - wolf off-shots, found in savage taigas and tundras, as well as temperate grasslands, forests and shrublands. Similarly fearless as the Garn, only they are smaller - still can be made into mounts or war/hunting animals. Orcs and the Mag'har may occasionally sell them.
Void Wolf - wolves corrupted by the Void, found in evil taigas, tundras, temperate grasslands, shrublands and forests. Their bites can reduce strength and endurance, and also induce a minor drowsiness.
Felbound Worg - worgs corrupted by demonic energy. Found in evil deserts, temperate shrublands, grasslands and forests. Their bites can cause necrosis and a strength reduction.
Doom Beast - demonically corrupted three-headed Hydras, found in evil lakes, oceans, and tropical forests. They feel no fear, and aside from spitting acid like their uncorrupted brethren, can also spit liquid lightning and ball lightning.
Dire Bear - massive bears from the savage taigas, tundras, temperate forests, grasslands and tundras. They feel no fear, and can be trained as war/hunting animals. Furbolgs, Frostborn, and a few other races may occasionally sell them.
Mutant Chimaerok - demonically corrupted chimaerok from evil mountains, tropical broadleaf forests and tropical swamps. They feel no fear, and can be trained as war/hunting animals. They have the same breath attacks, but can also stab with the spikes on their "chin" area.
Magehunter - dog-like beasts, found in good mountains, tundras, taigas and temperate forests. They are immune to magic, and their bites cause dizziness, as well as a reduction in focus and endurance.
Blighthound - another Darkhound derivative, these are found in evil mountains, tundras, taigas and temperate forests. They are larger than the other Darkhound derivatives, and their bites can cause a magical sickness that reduces speed, strength and agility.
Plaguehound - last of the Darkhound derivatives, found in evil taigas, temperate shrublands, grasslands and forests. Their bites spray plague sludge over the wounds they cause, which causes necrosis, a mild fever, and coughing blood - they can additionally spit globs of the sludge over a distance.
Fel Beast - large, demonic beasts that resemble Core Hounds. They are found in evil deserts and mountains. They are similar for the most part, but instead of breathing magma, they breathe felfire.
Fel Wolf - skeletal remains of wolves, reanimated by demonic energy. They cause the same sickness as the Felbound Worgs. Used as pets by the Demons and Fel Tauren.
Chaos Kodo - corrupted kodo beasts, found in evil deserts, savannas and shrublands. More aggressive than regular kodos, and will attack unprovoked. Used as pets by Chaos Orcs.
Chaos Worg - corrupted, skull-headed worgs, found in evil mountains, temperate grasslands, forests and shrublands. Used by the Chaos Orcs as pets.
Void Stalker - Warp Stalkers corrupted by the void, found in evil temperate forests and grasslands. They have a shorter cooldown on their Time Warp ability, and are also fearless and feel no pain.
Nightmare Lasher - corrupted lashers, found in evil forests and wetlands. They have grown to be larger than humans, but are otherwise the same.
Nightmare Treant - corrupted treants, found in evil forests. They are larger, and their scratching attacks can cause a "nightmare sickness", which reduces endurance, and can cause a fever and drowsiness.
Flamekin - minor demons, found in evil deserts and mountains. They are mischievous, and can throw fireballs.
Nightmare Roc - corrupted Curseborn Rocs. Found in evil forests and mountains, they feel no pain.
Nightmare Lurker - creatures of the Nightmare, found in evil forests and wetlands. Their bites and scratches can cause the nightmare sickness.
Nightmare Manifestation - another creature of the Nightmare, found in evil forests and wetlands. Their bites and scratches induce the nightmare sickness - on top of that, they can either spit nightmare ichor that causes drowsiness, pain and erratic behavior, or breathe nightmare gas that causes drowsiness, erratic behavior and a fever. They don't leave corpses behind, only a puddle of nightmare ichor.
Nightmare Fiend - minor manifestations of the Nightmare, though they are still quite large. They can gore with their horns, and their bites and scratches induce the nightmare sickness. They can spit nightmare ichor, although their version's effects are weaker than those of the Manifestation.
Fel Gronnling - corrupted Gronnlings found in evil deserts and mountains. They feel no pain, and are even easier to enrage. Their scratches and bites can cause the fel sickness.
Mechanowolf - wolf-like constructs, used by Goblins and Gnomes as pets. Not found in the wild like the other constructs, but can be bought from caravans.
Arachnodrone - spider-like constructs, used by Goblins and Gnomes. They are immune to webs, and can climb anywhere.
Mechanical Chicken - small constructs, used as pets by Gnomes and Goblins. They hunt vermin, and may occasionally "lay" bars of iron.
Mechanical Squirrel - small constructs, sold by Gnomes and Goblins. They hunt vermin, and can climb anywhere - are immune to webs as well.
Mechanical Dragonling - small, resistant constructs. They hunt vermin, and also serve as additional defense against bigger threats, by spitting chunks of iron that cause blunt damage. They are also capable of flight.