How I verified this: Every unlock day, prereq pet level, and skill scaling number in this guide comes from my own in-game testing on a Day 200+ server, cross-checked across two earlier servers. Where something is observed in-game but the exact mechanic isn't displayed on screen (drop tables, rally math), I've flagged it so you know what's solid and what's pattern-recognition. Last updated May 2026.
Every pet guide I read when I started told me Lion was the best pet. They were right — eventually. The problem was, my kingdom was 45 days old and Lion was 68 days away, and nobody had a real answer for what to actually do with that gap.
This guide fills the gap. Verified unlock days, where to put your pet food at each stage, and where it stops being worth it.
The Real Questions
Pets are a long-term investment, not a quick power boost. So the question isn't "which pet is strongest" — it's:
- What pets can I actually access right now?
- How long until better pets unlock?
- Should I invest heavily now or save resources?
- What's the return on investment over 30, 60, 90 days?
After three servers of doing this — two F2P, one mid-spender — these four questions are the ones I wish someone had handed me on Day 1.
Kingdom Age: When Pets Actually Unlock
Pets unlock based on server age, not your personal Town Center level. Every player on a Day 100 server has access to the same pets. A whale on a Day 50 server has zero. An F2P on a Day 200 server has access to the whole roster. If you don't know your current state age, check the Server Timeline Guide or use the server timeline calculator before spending pet food.
These are the verified unlock days based on the in-game battlefield timeline:
| State Day | What Unlocks | Strategic Implication |
|---|---|---|
| Day 0–54 | Nothing — Beast Cage is locked | Save pet food packs for later |
| Day 55 | Gray Wolf, Lynx, Bison (Gen 1) | Early utility available |
| Day 72 | Cheetah, Moose (Gen 2) | First combat-relevant pets |
| Day 113 | Lion, Grizzly Bear (Gen 3) | Major turning point — Lion drops Truegold |
| Day 197 | Giant Rhino, Mighty Bison (Gen 4) | Rally meta-defining unlocks |
| Day 281 | Great Moose, Alpha Black Panther (Gen 5) | Late-game refinement targets |
| Day 365 | Regal White Lion, Ironclad War Elephant (Gen 6) | Year-one milestone |
| Day 449 | Ironclad War Bear (Gen 7) | Current ceiling for long-term servers |
Server day is the gate, but it's not the only gate. Several later pets also require prior pets at specific levels before you can capture them. The two that catch players out:
- Lion requires Moose at Level 15
- Mighty Bison requires Giant Rhino at Level 30
If you skipped Moose to save resources, you're not going to be capturing Lion on Day 113 — you'll be sitting at Day 113 with Lion locked behind a Moose level. Same with Bison and Rhino. Plan one pet ahead.
Beast Cage itself also requires Town Center Lv. 18. On Day 55, if your TC isn't there yet, the cage stays locked even though Gen 1 pets are technically available.
The Investment Decision Framework
Use this at each stage of your kingdom:
Day 55–71: The Foundation Phase
Available pets: Gray Wolf, Lynx, Bison
These three are useful, but every one of them gets outclassed by Day 72 (Cheetah) and again by Day 113 (Lion). So you're not building a powerhouse here — you're building a baseline.
What I'd do at this stage:
| Pet | Investment Level | Reasoning |
|---|---|---|
| Gray Wolf | Level 15–20 | Construction Aide is a 5-min, 23-hour-cooldown active — 5% to 15% boost depending on skill level. Helpful early when builds are short, less helpful later. |
| Bison | Level 15–20 | Grip of the Titan instant-completes a single gather. Stays mildly useful long-term, but not worth overinvesting. |
| Lynx | Level 20 hard cap | Comforting Embrace restores ~40 stamina per daily use. That exactly covers your 4 Pet Adventures. Anything more is wasted. |
The key insight: Don't pour resources into Gen 1 pets. Get them functional, then save your pet food and Taming Marks for what's coming.
Resource math: I burned through about 30k pet food on Gray Wolf in my first kingdom before realizing what Lion would unlock with the same materials. Don't repeat that. The same pet food spent on Lion later gives you roughly 3x the stat return — patience pays.
ROI Comparison: Where Resources Actually Pay Off
Pets are investments. Here's the return breakdown:
Lion (Gen 3, Day 113)
- Investment: Pet food + advancement materials
- Return: High-tier upgrade materials for gear, Truegold, and charms roughly every 1–2 days
- Timeline: Compounds over months
- Verdict: Best long-term ROI in the game
Mighty Bison (Gen 4, Day 197)
- Investment: Pet food + advancement materials (plus Rhino at Level 30 to unlock)
- Return: +15,000 Squad Capacity in rallies → more troops → more kills → better rewards
- Timeline: Immediate in battles
- Verdict: Best combat ROI — the one pet whose buff still helps you when joining
Gray Wolf (Gen 1, Day 55)
- Investment: Pet food + advancement materials
- Return: 5–15% construction speed for a 5-minute window once every 23 hours
- Timeline: Diminishes as builds get longer
- Verdict: Useful early, weak long-term ROI
Pet Refinement: How the Quality System Actually Works
Refinement is a completely separate system from leveling. Leveling uses Pet Food. Refinement uses Taming Marks and adds bonuses to specific troop types — Infantry Health, Archer Lethality, Cavalry Health, and so on. For how Health and Lethality compare in actual combat, use the combat stats guide alongside this section.
Every pet has 6 secondary buffs: Health and Lethality for each of the three troop classes. They unlock at Pet Level 10 and start at Common quality. Refining raises their percentage values, and once a buff hits its cap for the current tier, it promotes to the next tier and locks in there permanently — even if a future refine drops the number, it cannot fall below the tier it's already reached.
The 6 quality tiers
Most older guides (and the version of this guide before I corrected it) list the tier ladder as Gray → Green → Blue → Purple → Gold. That's outdated. The current in-game ladder is:
Common → Uncommon → Rare → Epic → Mythic → Legendary
Six tiers, not five. Mythic was added between Epic and Legendary in a recent update, and most fan sites haven't updated to reflect it yet.
Pet Level controls the maximum tier you can reach
This is the part the old version got wrong. Your refinement quality is capped by the pet's level, not by how lucky your rolls are. Straight from the in-game Refining Rules screen:
| Pet Level | Maximum Refinement Quality |
|---|---|
| Level 10 | Common |
| Level 20 | Uncommon |
| Level 30 | Rare |
| Level 40 | Epic |
| Level 50 | Mythic |
| Level 50 | Legendary |
Yes, Mythic and Legendary both gate at Level 50 — that's what the in-game screen shows. The game doesn't display the extra requirement for unlocking Legendary on top of Mythic, so for now treat Mythic as the realistic ceiling unless you're whaling.
Per-pet stat caps by tier
Each buff has a maximum value it caps at within each tier. Higher-generation pets have higher caps, which is why a Mythic buff on Mighty Bison is worth 6–7x what the same Mythic buff on Gray Wolf is worth. Same effort relative to the pet, wildly different payout.
| Pet | Epic Cap | Mythic Cap | Legendary Cap |
|---|---|---|---|
| Gray Wolf | 4.69% | 6.70% | 8.70% |
| Lynx / Bison | 9.39% | 13.41% | 17.40% |
| Cheetah / Moose | 14.08% | 20.11% | 26.00% |
| Lion / Grizzly Bear | 20.34% | 29.05% | 38.00% |
| Giant Rhino / Mighty Bison | 31.28% | 44.69% | 58.00% |
| Great Moose / Alpha Black Panther | 34.41% | 49.16% | 63.90% |
| Regal White Lion / Ironclad War Elephant / Ironclad War Bear | 40.67% | 58.10% | 75.50% |
How to read this: If your Lion's Archer Lethality is sitting at 18%, you need to keep refining until it hits 20.34% to lock in Epic. Once it locks, the buff can drop within the Epic range on bad rolls, but it'll never fall back below 20.34%. To push it further toward Mythic (29.05%), Lion needs to be at Pet Level 50.
How refining works in practice
- Spend a Taming Mark to roll
- The game randomly adjusts your 6 secondary buffs up or down
- If the net power change is positive, accept the refine
- If it's negative, reroll (which costs another mark)
- Once a buff hits the cap for its current tier, that tier locks in permanently
The screen will sometimes show a net-negative refine that promotes one buff to the next tier. That's usually still worth accepting — the locked tier is permanent, the temporary drops on other buffs are not.
Refinement reality: Epic is reachable for most pets with patience and Pet Level 40. Mythic requires Level 50 and significantly more marks. Legendary is whale territory and may require additional conditions the game doesn't openly explain. Know when to stop and switch to a higher-generation pet — a Common Mighty Bison gives more raw stat than a Mythic Gray Wolf.
Refinement strategy by tier
| Tier transition | Taming Mark to use | Reasoning |
|---|---|---|
| Common → Uncommon | Common Marks | Cheap gains, generous success rate |
| Uncommon → Rare | Common Marks | Still reasonable, save Advanced for later |
| Rare → Epic | Advanced Marks | Success rate drops, better marks pay off |
| Epic → Mythic | Advanced Marks + patience | Significant resource sink |
| Mythic → Legendary | Advanced Marks + a lot of luck | Diminishing returns, consider another pet |
Stat stacking: All pet refinement stats stack additively. If Wolf gives +2% Archer Lethality and Lion gives +4%, you have +6% total — you can see it confirmed in your in-game stat panel. Every pet you develop contributes at the same time.
For dungeon-specific pet stat and Taming Mark ROI, especially where pets matter more than account-wide stats, see the Forest of Life formation guide.
The Lynx Question: Why Level 20 is the Hard Cap
Most guides say "cap Lynx at 20" without explaining the math. Here it is:
- Lynx's Comforting Embrace restores 35–60 stamina per use (scales with skill level)
- At Pet Level 20, the skill hits Level 2 and restores roughly 40 stamina
- Cooldown: 23 hours — one cast per day, basically
- Pet Adventures cost 10 stamina each
- You can run 4 Pet Adventures daily
- 4 × 10 = 40 stamina needed
One Level-20 Lynx cast covers your daily adventures exactly.
Pushing Lynx past Level 20 generates excess stamina with nowhere to spend it. Stamina from other sources (events, packs) should be banked for Terror Hunts and special events instead.
Common Scenarios
"I just hit Day 55. What do I do?"
Get Gray Wolf and Bison to Level 15–20. Get Lynx to exactly 20. Then turn your focus to Day 72 prep — when Cheetah and Moose unlock, Moose at Level 15 is a hard requirement to capture Lion on Day 113. Don't treat her as optional.
"Lion just unlocked and my Cheetah is Level 35. Should I switch?"
Yes, immediately — assuming Lion is actually capturable (you got Moose to 15). Lion's passive item generation outvalues Cheetah's pet food at any level comparison. Every day you delay Lion is lost drops.
"I'm F2P but want to be competitive in rallies. Mighty Bison or Lion?"
Lion first. Here's why: Lion's drops feed Hero Gear and Governor Charms, both of which compound your overall combat power across every march. Mighty Bison matters more for players who already have strong gear and just need more troops in the fight. If you lead rallies regularly though, Bison gets equal priority — that +15,000 squad cap is a direct DPS multiplier. Just remember Bison requires Giant Rhino at Level 30 to unlock. For broader no-spend resource planning, pair this with the F2P Guide.
"Should I refine Gen 1 pets at all?"
Minimally. Get them to Uncommon tier for cheap stat boosts (Common Taming Marks), then save everything for Gen 3–4 pets where the same marks give 3–5x the stats.
"Do my pets help when I join someone else's rally?"
Mostly no, with one practical exception. When you join a rally, the rally leader's pets are the ones that matter for the fight itself — your Lion drops, your Rhino attack, your Moose debuff all sit on the bench. The exception is Mighty Bison: because it changes how many troops you can deploy in the first place, your own Bison still affects your contribution. This matters most in Bear Hunt and major rally events. The game doesn't lay this out explicitly anywhere, so if Century ever patches joiner mechanics this answer may change.
Quick Decision Flowchart
What should I upgrade right now?
- Is Lion available and is Moose at 15+? → Upgrade Lion
- Lion unlocked on the server day but Moose is below 15? → Push Moose to 15 immediately, then start Lion
- No Lion yet but Cheetah available? → Upgrade Cheetah to 25–30 + Moose to 15, then bank
- Only Gen 1 available? → Get to Level 15–20, then save everything
- Day 197+ and you lead rallies? → Rhino to 30 to unlock Bison, then split focus across Lion + Bison + Rhino
The Three Rules
If you forget everything else in this guide, remember these:
Rule 1: Respect the timeline, but plan one pet ahead. Server day is the floor for unlocks, not the whole story. Lion needs Moose at 15. Mighty Bison needs Rhino at 30. Don't skip "boring" pets — they're gatekeepers for the good ones.
Rule 2: Lion is non-negotiable. Once Lion is actually capturable, it becomes your #1 pet food sink regardless of playstyle. The passive item generation has no equal.
Rule 3: Playstyle determines everything else.
- Rally leaders → Rhino to 30 (for Bison unlock), then Bison + keep pushing Rhino
- Rally joiners → Lion focus, with Bison as the one pet that plausibly still helps you when joining
- F2P → Lion forever, combat pets are luxury picks
The pet system rewards patience and planning. Don't chase short-term power — build for the long game.
If your kingdom has reached the Master system at Day 113, pair this with the Master Academy Guide. Pets and Masters both reward long-term resource planning, and Pan/Valora upgrades compound the same daily Forgehammer and Truegold goals Lion is already feeding.
For the full timeline of every server unlock, see the Server Timeline Guide.
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