Adding a hydration bar and making the "Snowy Mountains" dangerous without enough body fat or fur thickness. Technical Implementation (For Modding)
You may need to edit the assets or res/layout files to add new buttons for things like "Mark Territory."
Permanent or long-term debuffs (limping, reduced attack) after taking massive damage from a boss.
A small chance (1-2%) to spawn "Albino" or "Melanistic" offspring with unique stealth or intimidation bonuses. 3. Survival Hardcore Mode