Dangkang
A Dangkang can be tamed by a Naturalist. They're fairly terrible, except for one thing: damage in combat.
Trait: 10 Strength /level on the first round of combat.
A Dangkang has only one die, and it starts with 2 blue faces and one green face. It advances to 3 blue faces and 1 green face at level 3, and 2 blue faces, 2 green faces, and one red face at level 5.
Blue face: Sneeze. At level 1, 6 damage and 4 poison, boost for another +6 poison per die. +1 damage and +1 poison per level. (Quite good for a single die!)
Green face: Gore. At level 1, 5 damage and 6 bleeding, boost for another +6 damage and +4 bleeding per die. +1 damage and +1 bleeding per level. (Quite good for a single die!)
Red face, appears at level 5: Ram. At level 1, 5 damage, 5 bleeding, and 10 armor, boost for +5 damage and +10 armor per die. (Quite good for a single die!)
Everything else is terrible: they have exactly one die (which maxes out at 5 faces), have the basic 2 capacity, and only a Beast equipment slot.