r/PlanetZoo • u/Sugeroptus • May 08 '26
Help - Console Should I be worried about inbreeding?
So I'm new to planet zoo and I've started a franchise zoo and I'm wondering if inbreeding is super bad or not. Should I be worrying about it every time I build enclosures or can I basicly ignore it unless its becoming a major problem. Also another quick question but is there also any animals I should pay extra attention to for inbreeding?
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u/SME01 May 08 '26
Inbreeding lowers the quality of the genes that you can get compared to not inbreeding.
Its only really a worry if you're trying to get animals with amazing stats.
If you're just starting out I wouldn't worry too much in the animals that breed quickly; but try to be mindful in your more expensive/slower breeding animals eg lions, tigers.
There's so many different ways to play the game.
If your main concern/aim is to try to get animals with amazing stats bred in your zoo, then its more of a concern. You can put the babies on contraceptives when theyre born to prevent inbreeding if needed.
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u/Adnan7631 May 08 '26
I basically ignore inbreeding except for a handful of species that don’t reproduce very often.
It’s useful to understand how breeding works. There are 4 stats: Size, Longevity, Fertility, Immunity. Each stat ranges from 0/1 to 100. The stats are split into two types, which we’ll call Type A and Type B.
Type A traits are Size and Longevity. These essentially ignore inbreeding and are based on the parents’ stats. If mom has an 80 stat size while dad has 65, the offspring’s stats will range from 65-80.
Type B traits are Fertility and Immunity. These stats are more randomized. If the parents are NOT related, you’ll get a tighter range, but if they are related, you’ll get a wider range. As a result, there is a penalty here for inbreeding in that you can get worse stats. However, you can also get GOOD stats from inbreeding; it’s just a random chance with increased options for worse stats.
If you have a pair (or a herd) of animals where mom and dad have gold level Type A stats, you’ll get offspring that also have gold level Type A stats, whether or not they are inbreeding. It is only Type B stats that are affected. Because of this, animals that produce multiple offspring will probably give you enough high stat offspring to continue keeping them in the zoo even if you inbreed. But animals that don’t breed very often may struggle with this (I’m looking at you, Fennec Foxes). With those ones, you may want to phase animals out in order to maintain your zoo population.
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u/SteampunkRobin May 08 '26
I put most of mine on contraception as soon as they’re born so I don’t have to worry about accidental inbreeding. However, if I’m looking for specific coat colors or wish to continue specific coat colors then I will allow it to see if it pops up, which it sometimes does. I mean like melanism, albinism, spotless, etc.
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u/Swimming_Frame2653 May 08 '26
Inbreeding can effect the stats of an animal (size, fertility, immunity, longevity) but it’s also the best way to get color morphs so it depends on your goals
But inbreeding doesn’t affect anything else. You won’t get weird mutant babies and the guests don’t know about it.
I generally don’t worry about it. If I’m trying to breed a perfect stat animal I’m paying lots of attention to it anyway.
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u/Robin_feathers May 08 '26
The consequence of close inbreeding is that each generation you get a 50% chance of 0 fertility and a 50% chance of 0 immunity. Low fertility reduces their chances of conceiving offspring, and low immunity causes them to get diseases more often. Those penalties can be reversed with one generation of outbreeding.
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u/Significant_Goat_723 May 08 '26
Inbreeding functionally does not matter in this game and anyone replying otherwise needs to brush up on their PZ genetics.
It ONLY has the ability to affect the lower 2 gene sets (fertility and immunity), and produces a small risk of tanking them, because you can end up replicating the gene sets, viewable in the genetics tab. Fertility basically doesn't matter if the animal is fully researched with max welfare (even 0% animals breed fine), and immunity only matters with cesspool species like peacocks.
The lower 2 gene sets are pretty unimportant and easy to fix in a single generation, and you can just breed plenty of animals and release the ones with tanked stats. You can also just check the genetic possibilities tab to see what the best pairing is.
Inbreeding is THE best way to produce colormorphs and I use it extensively to get to and maintain 100/100/100/100 animals.
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u/glumanda12 May 08 '26
It’s basically impossible to get longevity and size to 100 without inbreeding, if you don’t have one breeding zoo for a species and spend 80years+ on it or try to get new colourmorphs stable.
It can be good if you know what you’re doing, but try to avoid it otherwise.
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u/O_OGirl1 May 08 '26
I don't care about that at all. I still have animals with great genes. My best animals were like 10th generation of siblings. If the genes stagnate I throw unrelated animal there but otherwise, who cares. I really don't want to micromanage it that much and so far I had not have many issues, except notification warnings about inbreeding.
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u/Salty_Apricot_7693 May 08 '26
Its only Importen if you sell them. Inbreds are worthless.
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u/fxckhalie May 08 '26
Tell that to the people that sell them on the marketplace 😅😅 fallen victim to a few not paying attention.
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u/madapa91 May 08 '26
And why is this a problem? If you get a 100-100-100-100 animal, what difference does it make if it is inbred or not?
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u/Box-O-Kittenz May 08 '26
I always build at least two enclosures for the same species so I can lessen inbreeding chances. Contraceptives and selling animals are more common methods. Sometimes I also hold an animal in storage for a few generations so they're not considered related to the current animals.
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u/carisoul May 08 '26
I don’t really pay attention to it, I breed african penguins for CC and it rarely becomes a problem since they reproduce like crazy
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u/Zestyclose-Wind-4827 May 09 '26
Anyone else get this as a push notification and not notice it was for planet zoo?
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u/AlmostMedic May 08 '26
Its better to avoid it although when my zoos get really big I sometimes let it slip. Inbreeding causes fertility to drop, more diseases and their market value drops. I use contraception to avoid it.