Brown Rat
Rattus norvegicusRed
The Brown Rat is one of the most adaptable mammals on Earth, thriving in riverbanks, wetlands, farms, ports, sewers, and city blocks with equal determination. Its compact strength, excellent climbing and swimming ability, and readiness to exploit almost any food source make it a master of human-altered environments.

In battle
- HP
- 2,600
- ATK
- 2,500
- DEF
- 2,400
- Energy cost
- 2
Passive Skills
- Up to 5 additional attacks, each with 35% chance to activate
- During the first appearance, DEF +50%
- For each ally from the Domestic biome in the rotation, DEF +20%
Attack Effects
- Poisons enemy (10% of attack value)
- Self: ATK +10% (the remainder of the combat) • DEF +10% (the remainder of the combat)
- Consume 1 energy point
The animal behind the card
It lives in social groups that use scent, touch, and vocal signals to coordinate space and hierarchy, and individuals learn quickly from one another when food or danger is involved. Omnivorous to the core, it eats grains, eggs, invertebrates, refuse, carrion, and countless other resources depending on what a given habitat offers.
Because it travels so easily with trade and settlement, the Brown Rat has become both a global survivor and a major ecological problem where it invades sensitive ecosystems. It is a species defined by intelligence, resilience, and the uneasy closeness between wildlife and human infrastructure.
Bestiary facts
Brown rats are clever, social, and ticklish enough to chirp when they play.
- Body length
- 0.2–0.28 m
- Weight
- 0.2–0.5 kg
Chemistry links
- Conservation
- Least Concern
- Remarkable Ability
- Enhanced Sense of Smell
- Feeding Mode
- Omnivore
- Behavioral
- Pack / Hierarchical Group
- General Physical
- Bony Endoskeleton with Jointed Limbs
- Intermediate Physical
- Burrowing Quadruped
- Specific Physical
- Ever-Growing Incisors / Grinding Teeth (Flat Molars)






