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Monster Rancher 4 Lifespans, Life Stages, and Growths

 

Growth Periods
Each monster goes through 4 stages of growth/aging until they are forced to retired a few months afterwards. It is important to take note of this so you know how to manage your monster statgains when they begin to peak, and knowing when to prioritize or prepare for freezing/combining when they're getting old. The four stages can be identified when Rio starts the week by talking about your monster:
Growth PeriodRio says...
1st Growth/AdolescentThe way we raise 'Monster'...
2nd Growth/Mature'Monster' is Mature...
3rd Growth/Late-age'Monster' is pretty Old...
4th Growth/Old'Monster' is becoming pretty weak...
Lifespan Ends/Retirement'Monster' cannot control body...

Here's a table for each Purebred monster's lifespan for each period. To calculate a sub-breed's lifespan, the lifespan formula is Main + Main + Sub = #, then #/3. This should be number of weeks and works at every stage.

Monster1st Growth2nd Growth3rd Growth4th GrowthRetirementTotal Weeks
Antlan10Mo. 3Wk.2Yr. 0Mo. 3Wk.3Yr. 2Mo. 2Wk.4Yr. 0 Mo. 4Wk.4Yr. 4Mo. 1Wk.208
Ape10Mo 4Wk.2Yr. 0Mo. 4Wk.3Yr. 2Mo. 4Wk.4Yr. 1Mo. 2Wk.4Yr. 4Mo. 3Wk.210
Baku11Mo. 2Wk.2Yr. 1Mo. 4Wk.3Yr. 4Mo. 3Wk.4Yr. 3Mo. 3Wk.4Yr. 7Mo. 1Wk.220
Beaklon11Mo. 1Wk.2Yr. 1Mo. 2Wk.3Yr. 3Mo. 4Wk.4Yr. 2Mo. 3Wk.4Yr. 6Mo. 1Wk.216
Dragon10Mo. 1Wk.1Yr. 11Mo. 1Wk.3Yr. 0Mo. 1Wk.3Yr. 9Mo. 4Wk.4Yr. 1Mo. 1Wk.196
Ducken10Mo. 3Wk.2Yr. 0Mo. 2Wk.3Yr. 3Mo. 4Wk.4Yr. 0Mo. 3Wk.4Yr. 4Mo. 1Wk.207.2 [208]
Durahan11Mo. 1Wk.2Yr. 1Mo. 2Wk.3Yr. 3Mo. 4Wk.4Yr. 2Mo. 3Wk.4Yr. 6Mo. 1Wk.216
Garu10Mo. 3Wk.2Yr. 0Mo. 3Wk.3Yr. 2Mo. 3Wk.4Yr. 1Mo. 1Wk.4Yr. 4Mo. 3Wk.209.6 [210]
Gitan10Mo. 1Wk.1Yr. 11Mo. 1Wk.3Yr. 0Mo. 1Wk.3Yr. 9Mo. 4Wk.4Yr. 1Mo. 1Wk.196
Golem11Mo. 2Wk.2Yr. 2Mo. 2Wk.3Yr. 5Mo. 2Wk.4Yr. 4Mo. 3Wk.4Yr. 8Mo. 1Wk.224
Hare10Mo. 3Wk.2Yr. 0Mo. 3Wk.3Yr. 2Mo. 2Wk.4Yr. 0Mo. 4Wk.4Yr. 4Mo. 1Wk.208
Henger10Mo. 2Wk.2Yr. 0Mo. 3Wk.3Yr. 2Mo. 2Wk.4Yr. 0Mo. 4Wk.4Yr. 4Mo. 1Wk.208
Jell10Mo. 2Wk.2Yr. 0Mo. 1Wk.3Yr. 1Mo. 4Wk.3Yr. 11Mo. 4Wk.4Yr. 3Mo. 1Wk.204
Joker8Mo. 1Wk.1Yr. 6Mo. 3Wk.2Yr. 5Mo. 2Wk.3Yr. 1Mo. 2Wk.3Yr. 4Mo. 1Wk.158.4 [159]
Koropendora10Mo. 4Wk.2Yr. 0Mo. 4Wk.3Yr. 3Mo. 1Wk.4Yr. 1Mo. 3Wk.4Yr. 5Mo. 1Wk.212
Lesione10Mo. 4Wk.2Yr. 0Mo. 4Wk.3Yr. 3Mo. 1Wk.4Yr. 1Mo. 3Wk.4Yr. 5Mo. 1Wk.211.2 [212]
Madillo10Mo. 2Wk.1Yr. 11Mo. 3Wk.3Yr. 0Mo. 4Wk.3Yr. 10Mo. 4Wk.4Yr. 2Mo. 1Wk.200
Mew11Mo. 1Wk.2Yr. 1Mo. 2Wk.3Yr. 3Mo. 4Wk.4Yr. 2Mo. 3Wk.4Yr. 6Mo. 1Wk.216
Mocchi10Mo. 3Wk.2Yr. 0Mo. 3Wk.3Yr. 2Mo. 3Wk.4Yr. 1Mo. 1Wk.4Yr. 4Mo. 3Wk.209.6 [210]
Mogi10Mo. 2Wk.1Yr. 11Mo. 4Wk.3Yr. 1Mo. 1Wk.3Yr. 11Mo. 2Wk.4Yr. 2Mo. 3Wk.201.6 [202]
Naga10Mo. 1Wk.1Yr. 11Mo. 2Wk.3Yr. 0Mo. 4Wk.3Yr. 10Mo. 3Wk.4Yr. 2Mo. 1Wk.199.2 [200]
Ogyo10Mo. 4Wk.2Yr. 1Mo. 1Wk.3Yr. 3Mo. 2Wk.4Yr. 2Mo. 1Wk.4Yr. 5Mo. 3Wk.213.6 [214]
Pancho11Mo. 2Wk.2Yr. 1Mo. 4Wk.3Yr. 4Mo. 3Wk.4Yr. 3Mo. 3Wk.4Yr. 7Mo. 1Wk.220
Phoenix8Mo. 1Wk.1Yr. 6Mo. 3Wk.2Yr. 5Mo. 2Wk.3Yr. 1Mo. 2Wk.3Yr. 4Mo. 1Wk.160
Pixie10Mo. 1Wk.1Yr. 11Mo. 2Wk.3Yr. 0Mo. 3Wk.3Yr. 10Mo. 3Wk.4Yr. 2Mo. 1Wk.200
Plant11Mo. 1Wk.2Yr. 1Mo. 2Wk.3Yr. 3Mo. 4Wk.4Yr. 2Mo. 3Wk.4Yr. 6Mo. 1Wk.216
Raiden10Mo. 4Wk.2Yr. 0Mo. 4Wk.3Yr. 3Mo. 1Wk.4Yr. 1Mo. 3Wk.4Yr. 5Mo. 1Wk.212
Rhinoroller10Mo. 3Wk.2Yr. 0Mo. 3Wk.3Yr. 2Mo. 3Wk.4Yr. 1Mo. 1Wk.4Yr. 4Mo. 3Wk.209.6 [210]
Ripper10Mo. 1Wk.1Yr. 11Mo. 1Wk.3Yr. 0Mo. 1Wk.3Yr. 9Mo. 4Wk.4Yr. 1Mo. 1Wk.196
Suezo10Mo. 3Wk.2Yr. 0Mo. 2Wk.3Yr. 2Mo. 1Wk.4Yr. 0Mo. 2Wk.4Yr. 3Mo. 4Wk.206.4 [207]
Suzurin10Mo. 4Wk.2Yr. 1Mo. 2Wk.3Yr. 3Mo. 3Wk.4Yr. 2Mo. 2Wk.4Yr. 5Mo. 4Wk.214.4 [215]
Tiger10Mo. 2Wk.1Yr. 11Mo. 4Wk.3Yr. 1Mo. 1Wk.3Yr. 11Mo. 2Wk.4Yr. 2Mo. 3Wk.201.6 [202]
Zan10Mo. 1Wk.1Yr. 11Mo. 1Wk.3Yr. 0Mo. 1Wk.3Yr. 9Mo. 4Wk.4Yr. 1Mo. 1Wk.196
Zuum10Mo. 4Wk.2Yr. 0Mo. 4Wk.3Yr. 3Mo. 1Wk.4Yr. 1Mo. 3Wk.4Yr. 5Mo. 1Wk.212

 

Life Types
Each unique monster also has a moment in which they gain an incredible amount of stats or 'peak' during training. There are 6 different growth types: Premature Weak, Premature Strong, Normal, Consistent, Late-bloomer Weak, and Late-bloomer Strong.

Life Types by Main Breed (See Monster Data to view sub-breed variations in Life Type)
Life TypesMonsters
Premature WeakPixie, Ripper
Premature StrongMogi, Naga, Plant, Rhinoroller, Suezo, Tiger
NormalDragon, Garu, Hare, Jell, Mocchi, Ogyo, Suzurin, Zan, Zuum
ConsistentDucken, Durahan, Henger, Joker, Madillo, Mew
Late-bloomer WeakAntlan, Beaklon, Gitan, Koropendora, Pancho, Raiden
Late-bloomer StrongBaku, Golem, Lesione

 

Heatmap guide to life types. Darkest green indicates the best gains.
Monster Rancher 4 Life Stage heat map comparison

Expand explanations of the Heat Map:

Premature Weak Type
  • Rises fast during childhood
  • Peaks just before reaching 1st Growth/Adolescence
  • Drops gains until reaching 2nd Growth/Mature
  • Drops gains again until it’s time to retire
Premature Strong Type
  • Rises pretty fast during childhood
  • Peaks when it reaches 1st Growth/Adolescence
  • Drops at a steady rate until it’s time to retire
Normal Type
  • Rises at a good pace during childhood and 1st Growth/Adolescence
  • Peaks halfway into 1st Growth/Adolescence
  • Drops at a steady rate until it’s time to retire
Consistent Type
  • Rises at a good rate during childhood
  • Will peak during 1st Growth/Adolescence, but never hit high numbers like other age types
  • Consistent high gains until midway through 2rd Growth/Mature
  • Steady drops into retirement
Late-bloomer Weak Type
  • Rises a pretty slow during childhood
  • Begins to pick up pacing during 1st Growth/Adolescence.
  • Peaks during 2nd Growth/Mature.
  • Drops at a slow and steady rate until it’s time to retire
Late-bloomer Strong Type
  • Rises slowly childhood
  • Begins to pick up pacing slowly during 1st Growth/Adolescence.
  • Rises better during 2nd Growth/Mature and peaks during later half.
  • Drops at steady rate at 3rd Growth/Late-age into until it’s time to retire

 

Monster Type Food/Item Interests

Every monster one category of food and items they will "Really Like", "Like", "Dislike", "Really Dislike", and "Hate". The table below shows how it affects them when you feed/give them one that fits the category. Food and Items NEVER raises stress! There's a bug in the game when your monster's hunger status over-prioritizes stress. Once hunger has been lowered, the game will show if it is currently stressed.

If the monster is a sub-breed of another type, it will use that sub-breed monster type for its Likes/Dislikes. If the monster is a rare/special breed, then it will usually have its own distinct set of Likes/Dislikes. If the monster is a rare/special breed, then it will usually have its own distinct set of Likes/Dislikes.
Example: Datonare (Tiger/Zuum) will not use Tiger's Interests, but instead use Zuum's Interests.

This can be very helpful if trying to maintain normal policy as often as possible! It may seem a little cruel, but your monster will have a much easier raising style in the middle

Food Interests
Really LikeLikeDislikeReally DislikeHate
Fullness Multiplier1.25x1.125x0.875x0.75x0 (Refuses Food!)
Policy Change21-2-40 (Refuses Food!)

Gift Item
Really LikeLikeDislikeReally DislikeHate
Policy Change21-2-40 (Refuses Gift!)

 

Credits: ADC*Ken's MR4 guide
This page was last modified: May 07 2024
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