The Mammoth is a late-game pet in Whiteout Survival that focuses on improving troop durability. Its active skill increases Troop Defense for two hours, making it useful during large alliance battles, defensive rallies, and other combat situations where troops must withstand sustained damage.
Leveling the Mammoth also provides permanent Troop Attack and Defense bonuses. However, unlocking and fully developing this pet requires significant progress, Pet Food, advancement materials, and refinement resources.
This Whiteout Survival Mammoth guide covers its unlock requirements, Hardened Skin skill, stats, upgrade costs, refinement, best uses, and investment priority.
Mammoth Overview
The Mammoth is mainly a defensive combat pet. Its active skill temporarily increases Troop Defense, while its level-based bonuses permanently improve both Troop Attack and Defense.
| Mammoth Detail | Information |
|---|---|
| Approximate unlock timing | State Day 370 |
| Additional requirement | Level 30 Saber-tooth Tiger |
| Maximum level | Level 100 |
| Main passive bonuses | Troop Attack and Defense |
| Active skill | Hardened Skin |
| Maximum skill effect | 10% Troop Defense |
| Skill duration | 2 hours |
| Skill cooldown | 20 hours |
| Maximum level-based Troop Attack | 33.52% |
| Maximum level-based Troop Defense | 33.52% |
| Maximum troop power | 2,413,440 |
| Maximum refinement | 49.16% |
The Mammoth’s combination of permanent combat stats and a temporary Defense bonus makes it useful for players who regularly participate in PvP. It can support both offensive and defensive situations, although its active skill is most valuable when troop survival is the main concern.
How to Unlock Mammoth in Whiteout Survival
The Mammoth becomes available at approximately State Day 370. Players must also have the Saber-tooth Tiger at Level 30 before they can unlock it.
Because pet releases are connected to state age, the Mammoth does not become available on the same calendar date for every player. Older states may already have access to it, while newer states must continue progressing through the pet release schedule.
Exact timing may vary due to game updates or adjustments to the state timeline.
Mammoth Unlock Requirements
| Requirement | Details |
| State age | Approximately 370 days |
| Previous pet requirement | Saber-tooth Tiger Level 30 |
| Pet system | Must already be unlocked |
| Resources needed afterward | Pet Food and advancement materials |
How to Prepare Before Mammoth Unlocks
As your state approaches the Mammoth release, consider saving:
- Pet Food
- Taming Manuals
- Energizing Potions
- Strengthening Serums
- Common Wild Marks
- Advanced Wild Marks
- Pet skill upgrade materials
Avoid using all your pet materials immediately before State Day 370. Even if you cannot maximize the Mammoth, saved resources can help you reach an important advancement milestone quickly.
Mammoth Skill: Hardened Skin
The Mammoth’s active skill is called Hardened Skin. When activated, the Mammoth acts as a shield and increases Troop Defense for two hours.
| Skill Level | Troop Defense Bonus | Duration | Cooldown |
| Level 1 | 2.5% | 2 hours | 20 hours |
| Level 2 | 3% | 2 hours | 20 hours |
| Level 3 | 3.5% | 2 hours | 20 hours |
| Level 4 | 4% | 2 hours | 20 hours |
| Level 5 | 5% | 2 hours | 20 hours |
| Level 6 | 6% | 2 hours | 20 hours |
| Level 7 | 7% | 2 hours | 20 hours |
| Level 8 | 8% | 2 hours | 20 hours |
| Level 9 | 9% | 2 hours | 20 hours |
| Level 10 | 10% | 2 hours | 20 hours |
At maximum skill level, Hardened Skin increases Troop Defense by 10% for two hours. The skill then enters a 20-hour cooldown.
Why Troop Defense Matters
Troop Defense helps reduce the damage your troops receive. Increasing this stat can make your formation more durable, especially during extended battles where troops face repeated attacks.
The value of Hardened Skin can be influenced by several factors:
- Your existing Troop Defense
- Enemy Troop Attack and Lethality
- Hero Expedition bonuses
- Chief Gear and Charm development
- Research progress
- Troop tier and formation
- Rally and garrison bonuses
Hardened Skin does not directly increase damage. Its main purpose is helping troops survive longer and reducing the pressure caused by incoming attacks.
Best Time to Activate Hardened Skin
The Mammoth skill should be saved for important combat. Activating it during routine activities wastes most of its value and may leave it unavailable when a major battle starts.
Good situations for Hardened Skin include:
- State of Power battle phase
- Sunfire Castle battles
- Fortress and Stronghold fights
- Defensive rallies
- Garrison defense
- City defense
- Contested facilities
- Extended alliance wars
Activate the skill shortly before combat begins. Alliance preparation, march setup, and waiting for opponents can consume a large part of its two-hour duration.
Because the cooldown lasts 20 hours, most players can only use Hardened Skin once during an important battle window.
Mammoth Stats and Bonuses
Leveling the Mammoth permanently increases Troop Attack and Troop Defense. These bonuses remain active without needing to activate Hardened Skin.
| Level | Troop Attack | Troop Defense | Troop Power |
| 1 | 0.17% | 0.17% | 12,240 |
| 10 after advancement | 2.86% | 2.86% | 205,920 |
| 20 after advancement | 5.70% | 5.70% | 410,400 |
| 30 after advancement | 8.85% | 8.85% | 637,200 |
| 40 after advancement | 11.99% | 11.99% | 863,280 |
| 50 after advancement | 15.44% | 15.44% | 1,116,680 |
| 60 after advancement | 18.88% | 18.88% | 1,359,360 |
| 70 after advancement | 22.32% | 22.32% | 1,607,040 |
| 80 after advancement | 26.05% | 26.05% | 1,875,600 |
| 90 after advancement | 29.78% | 29.78% | 2,144,160 |
| 100 after advancement | 33.52% | 33.52% | 2,413,440 |
At Level 100 with the final advancement completed, the Mammoth provides 33.52% Troop Attack and 33.52% Troop Defense from level-based bonuses.
Why Advancement Breakpoints Matter
The Mammoth gains gradual bonuses from normal levels. A much larger increase is received after completing advancement at every ten-level milestone.
For example, reaching Level 100 provides 31.46% Troop Attack and Defense before advancement. Completing the final advancement increases both bonuses to 33.52%.
Players should prepare advancement materials before reaching a level cap. Otherwise, the Mammoth will be unable to progress and will miss the larger milestone bonus.
Mammoth Advancement Requirements
Pet Food is used for normal Mammoth levels. Advancement is required at Levels 10, 20, 30, and every ten levels afterward.
Three advancement materials are required as the Mammoth progresses:
| Material | Purpose |
| Taming Manual | Required at every advancement milestone |
| Energizing Potion | Required from Level 30 onward |
| Strengthening Serum | Required from Level 50 onward |
Mammoth Advancement Costs
| Level Milestone | Taming Manuals | Energizing Potions | Strengthening Serums |
| Level 10 | 35 | 0 | 0 |
| Level 20 | 70 | 0 | 0 |
| Level 30 | 110 | 15 | 0 |
| Level 40 | 145 | 35 | 0 |
| Level 50 | 220 | 50 | 10 |
| Level 60 | 290 | 65 | 20 |
| Level 70 | 365 | 85 | 40 |
| Level 80 | 440 | 100 | 60 |
| Level 90 | 585 | 115 | 80 |
| Level 100 | 730 | 135 | 100 |
| Total | 2,990 | 600 | 310 |
Fully advancing the Mammoth through Level 100 requires:
- 2,990 Taming Manuals
- 600 Energizing Potions
- 310 Strengthening Serums
These totals do not include Pet Food, Wild Marks, or materials used to upgrade Hardened Skin.
Practical Advancement Advice
Choose an achievable milestone before investing heavily. Level 40, 50, 60, or 70 may provide better short-term value than attempting to reach Level 100 immediately.
A fully advanced Level 60 Mammoth is generally more useful than a Level 70 Mammoth that is stuck before advancement.
Mammoth Pet Food Requirements
The Pet Food cost increases significantly at higher levels.
| Target Level | Cumulative Pet Food |
| Level 10 | 6,325 |
| Level 20 | 19,725 |
| Level 30 | 42,275 |
| Level 40 | 78,075 |
| Level 50 | 132,125 |
| Level 60 | 209,425 |
| Level 70 | 314,925 |
| Level 80 | 450,525 |
| Level 90 | 622,525 |
| Level 100 | 834,625 |
Reaching Level 100 requires approximately 834,625 Pet Food.
The cost rises sharply during the later stages. Upgrading from Level 90 to Level 100 alone requires more than 200,000 Pet Food, so maximizing the Mammoth should be treated as a long-term goal.
How to Use Pet Food Efficiently
- Prioritize complete advancement milestones.
- Avoid spreading Pet Food across too many pets.
- Save large upgrades for pet-related scoring events.
- Keep enough advancement materials ready before reaching a level cap.
- Set a target based on your combat role and available resources.
- Continue developing important utility pets when they provide better everyday value.
Mammoth Refinement
The Mammoth has a maximum listed refinement of 49.16%. Refinement adds extra combat bonuses beyond the stats earned from normal levels and advancement.
The main refinement materials are:
- Common Wild Marks
- Advanced Wild Marks
Each refinement attempt produces a new set of values. Players can compare the new result with the current one before deciding whether to accept it.
Mammoth Refinement Tips
- Use Common Wild Marks for early refinement attempts.
- Save Advanced Wild Marks for late-game pets and stronger refinement ranges.
- Compare the complete result rather than one individual stat.
- Avoid replacing a balanced result for a very small improvement.
- Set a realistic refinement goal before spending materials.
- Prioritize level advancements when guaranteed progress offers better value.
Refinement can consume many Wild Marks because the result is not guaranteed to improve. Players with limited resources should avoid chasing the maximum refinement value too early.
Best Uses for Mammoth
Garrison Defense
The Mammoth is especially useful for players responsible for defending alliance objectives. Hardened Skin can help troops withstand incoming rallies during Fortress, Stronghold, and Sunfire Castle battles.
Garrison leaders are likely to gain the most value because their combat bonuses strongly influence the defending formation.
City Defense
Activating Hardened Skin before expected city attacks can improve troop durability. However, the skill should not replace proper defensive planning.
Players should still consider:
- Activating a shield when necessary
- Requesting alliance reinforcements
- Managing troop numbers
- Checking enemy rally strength
- Avoiding unnecessary losses
Defensive Rallies
Although rallies are normally associated with attacking, some battles require durable formations that can survive counterattacks or repeated engagements. The Mammoth’s Defense bonus can help during these longer combat sessions.
Sunfire Castle
Sunfire Castle battles often involve repeated attacks against strong formations. Hardened Skin can support players who are leading or reinforcing important garrisons.
Wait until your alliance is actively contesting the castle before activating the skill.
State of Power
During the State of Power battle phase, the Mammoth can be used for city defense, castle combat, facility control, and large-scale PvP.
The two-hour duration can cover an important battle window when timed correctly.
Fortress and Stronghold Battles
Hardened Skin is useful when your alliance must hold a contested structure against repeated attacks. Its value is lower when the objective is uncontested or the opposing alliance is not actively fighting.
Is Mammoth Worth Upgrading?
The Mammoth is worth upgrading for players who regularly participate in PvP, particularly garrison leaders and defense-focused players.
Its active skill provides a universal Troop Defense bonus, while its permanent stats increase both offense and defense.
| Advantages | Disadvantages |
| Increases Troop Defense for two hours | Unlocks late in the state timeline |
| Benefits every troop type | Requires Saber-tooth Tiger Level 30 |
| Strong permanent Attack and Defense bonuses | Expensive to reach Level 100 |
| Useful for garrisons and city defense | 20-hour skill cooldown |
| Supports sustained combat | Does not directly increase damage |
| High long-term combat value | Competes with other pets for resources |
Recommended Priority by Player Type
| Player Type | Upgrade Priority |
| Main garrison leader | Very high |
| Rally leader | High |
| Active PvP player | High |
| Backup garrison leader | High |
| Regular rally participant | Medium |
| Free-to-play player | Medium |
| Casual development player | Low to medium |
Free-to-play players can still benefit from the Mammoth, but they should focus on realistic milestones. It is not necessary to reach Level 100 immediately for the pet to provide useful combat bonuses.
Recommended Mammoth Upgrade Strategy
1. Upgrade Saber-tooth Tiger First
Make sure your Saber-tooth Tiger reaches Level 30 before the Mammoth release. Without meeting this requirement, you will be unable to unlock the Mammoth.
2. Save Resources Before State Day 370
Prepare Pet Food, Taming Manuals, Energizing Potions, and Strengthening Serums in advance.
3. Choose a Complete Milestone
Select a target such as Level 40, 50, or 60. Confirm that you have enough advancement materials before spending Pet Food.
4. Upgrade Hardened Skin Based on Your Role
Garrison leaders and active PvP players should place greater priority on Hardened Skin. Casual players can improve the skill gradually.
5. Prioritize Guaranteed Progress
Normal levels and advancement provide predictable stat improvements. Refinement is less consistent, so level progression may offer better value when resources are limited.
6. Upgrade During Scoring Events
When possible, use Pet Food, advancement materials, and Wild Marks during events that reward pet development. This provides permanent account growth while also earning event points.
Mammoth Mistakes to Avoid
- Forgetting the Saber-tooth Tiger requirement: It must reach Level 30 before the Mammoth can be unlocked.
- Activating Hardened Skin too early: Waiting for combat can waste much of its two-hour duration.
- Ignoring the cooldown: The skill may be unavailable for a more important fight later.
- Stopping at a capped level: Prepare advancement materials before reaching each ten-level milestone.
- Using the skill for minor battles: Save it for important objectives or major PvP sessions.
- Spending every Wild Mark immediately: Refinement results are unpredictable.
- Ignoring other pets: Utility and development pets may offer better everyday benefits.
- Upgrading without a target: Set a realistic level and advancement goal before spending resources.
- Assuming Defense guarantees victory: Heroes, troop tiers, formation, gear, research, and reinforcements remain important.
FAQs
When does Mammoth unlock in Whiteout Survival?
The Mammoth normally becomes available at approximately State Day 370. Release timing may vary due to game updates or state schedules.
What is required to unlock Mammoth?
In addition to reaching the required state age, players must upgrade the Saber-tooth Tiger to Level 30.
What does the Mammoth skill do?
Hardened Skin increases Troop Defense by 2.5% to 10%, depending on the skill level.
How long does Hardened Skin last?
The Mammoth’s active skill lasts for two hours.
What is the Mammoth skill cooldown?
Hardened Skin has a 20-hour cooldown after activation.
How much Pet Food is needed to max Mammoth?
Reaching Level 100 requires approximately 834,625 Pet Food, plus the required advancement materials.
Conclusion
The Mammoth is a strong defensive pet in Whiteout Survival. Its Hardened Skin skill increases Troop Defense by up to 10% for two hours, making it particularly useful during garrison defense, Sunfire Castle, State of Power, Fortress battles, and other sustained PvP encounters.
Its permanent Troop Attack and Defense bonuses also provide significant long-term value. However, players must reach the required state age, upgrade the Saber-tooth Tiger to Level 30, and prepare a large amount of Pet Food and advancement materials.
Focus on complete advancement milestones, activate Hardened Skin only during important combat windows, and avoid spending too many Wild Marks on early refinement attempts.
For more pet breakdowns, event strategies, and progression advice, explore our other Whiteout Survival guides on Heaven Guardian.
