Updated October 14, 2026
If your animals keep complaining that they are too cold in Planet Zoo 2, adding another heater may not solve the problem. The correct fix depends on whether the warning concerns a land habitat, water inside a regular habitat, or a custom aquarium.
Start by checking the species' temperature requirements in the Zoopedia. Then inspect the appropriate temperature control instead of changing unrelated habitat settings.
Quick Answer: How to Fix Animals That Are Too Cold
- Land habitat: Check the heater's placement and coverage, then compare the displayed temperature with the animal's requirements.
- Regular habitat water: Inspect the water system and look for the temperature setting on the relevant pump.
- Aquarium: Select the aquarium habitat through its gate and check its Environment settings.
- Missing aquarium temperature setting: Briefly unpause the simulation and check the Environment settings again.
- Temperature controls behaving strangely: Check whether the issue began after changing temperature units before making further adjustments.
📋 Table of Contents
- Quick Answer: How to Fix Animals That Are Too Cold
- 1. Check the Animal's Temperature Requirements
- 2. Fix Temperature in a Land Habitat
- 3. Fix Cold Water in a Regular Habitat
- 4. Change Aquarium Temperature
- 5. Fix Missing or Broken Temperature Controls
- 6. Check Whether the Temperature Problem Is Resolved
- Frequently Asked Questions
- Final Tip
1. Check the Animal's Temperature Requirements
Before buying more equipment, check the temperature range required by the affected species.
Open the animal's information or Zoopedia entry and look for its temperature requirements. Compare the displayed range with the current temperature of the relevant habitat or water system.
This first check matters because a temperature that works for one species may be unsuitable for another. Avoid using a single target temperature for every animal in your zoo.
If several species share an enclosure, check their individual requirements and confirm that their habitat arrangements are compatible.
Quick tip: Identify exactly which temperature is causing the warning before making changes. The temperature of the surrounding habitat and the temperature of water inside a habitat are not necessarily controlled in the same way.
2. Fix Temperature in a Land Habitat
If a land animal is too cold, inspect the habitat's heating setup before making expensive changes to the enclosure.
Check the heater's placement
Select the heater and inspect its placement and coverage. If the animal's habitat does not appear to be receiving enough heat, reposition the heater and check the temperature again.
Do not assume that placing a heater anywhere inside the enclosure automatically solves the problem. Its position and the area it covers matter when troubleshooting a temperature warning.
Adjust the temperature carefully
Use the available temperature settings as a guide, but do not copy a setting from another habitat without checking the species' requirements.
After moving or adjusting the heater:
- Let the simulation run.
- Check the displayed habitat temperature again.
- Revisit the animal's welfare information.
- Make another adjustment only if the temperature remains outside the required range.
If the temperature is now suitable but the animal remains unhappy, inspect its other welfare needs rather than continuing to increase the heat.
3. Fix Cold Water in a Regular Habitat
Animals that swim or spend time in water can have a different temperature problem from animals living primarily on land.
If an otter or another aquatic animal is too cold, placing a standard heater in the water may not be enough. Check the water system and its temperature controls instead.
Step 1: Inspect the water system
Select the relevant water system and inspect the available settings. If the habitat uses a water filter and pump, check that the components are installed and connected correctly.
Address any obvious water-system problems before changing unrelated habitat equipment.
Step 2: Check the pump's temperature setting
Select the relevant pump and look for its temperature control. If the option is available, adjust it to suit the species' requirements.
If you cannot find the setting, confirm that you selected the correct pump and inspect its available controls. Do not assume that every water-system configuration exposes identical options.
Important: Land heating and water temperature are separate troubleshooting paths. If the water itself is too cold, repeatedly repositioning a land heater may not address the cause.
Step 3: Check the water temperature again
Allow the simulation to run after changing the setting. Recheck the water temperature and the animal's welfare information.
If the displayed temperature does not change, verify that you selected the correct pump and that the relevant water system is connected properly.
Do not assume that every body of water in your zoo uses the same settings. Check the system serving the affected habitat.
4. Change Aquarium Temperature
Aquariums have their own environmental settings. If your fish are too cold, do not automatically apply the same solution you would use for a land habitat or an ordinary swimming area.
Step 1: Select the aquarium habitat
Select the aquarium through its gate or habitat selection point. Open the aquarium's settings and look for the Environment section.
Step 2: Find the temperature setting
Look for the aquarium's temperature control under Environment. If the control is available, adjust it to match the requirements of the species inside the aquarium.
Do not rely on a nearby land heater to correct aquarium water temperature. Check the aquarium's own settings first.
Step 3: Unpause the simulation if the setting is missing
If you cannot find the temperature option, briefly unpause the simulation and reopen the aquarium's Environment settings.
Some players have found that the temperature control appears after the simulation starts running. However, this workaround does not resolve every reported case, so continue with the checks below if the setting remains unavailable.
Step 4: Let the temperature update
After adjusting the aquarium setting, allow the simulation to run and check the displayed temperature again.
If the warning persists, confirm that the aquarium is using the correct settings and that the species' temperature requirements are being met. Avoid repeatedly changing values without checking whether the displayed temperature actually responds.
5. Fix Missing or Broken Temperature Controls
Sometimes the problem is not simply that the habitat is too cold. The relevant control may be missing, unresponsive, or displaying values that do not make sense.
Try these checks in order.
Aquarium temperature setting is missing
Briefly unpause the simulation, then reopen the aquarium's Environment settings.
If the option still does not appear, confirm that you selected the aquarium habitat itself rather than a nearby object or a different part of the water system.
Water pump temperature will not change
Check that you selected the pump serving the affected water body. Inspect the available pump settings and connected water-system components before changing other equipment.
If the temperature remains unchanged, allow the simulation to run and check again.
The pump displays an implausible temperature range
Some players have reported problems with water-pump temperature controls after switching between Celsius and Fahrenheit, including unusually high displayed values and sliders that do not behave correctly.
If your controls started behaving strangely after changing temperature units, avoid making repeated adjustments while the values appear incorrect. Back up your save before testing further changes, particularly if you also notice unexpected changes to your zoo's finances.
This is a reported issue, not a guaranteed problem with every save. Changing the units back may not resolve every case.
The temperature is correct, but the animal is still unhappy
Temperature is only one part of animal welfare. If the displayed temperature is within the species' required range, inspect the other welfare indicators rather than continuing to adjust the heating.
If the problem concerns the habitat's wider ecological condition, see the separate Planet Zoo 2 guide to fixing an ecosystem that isn't established. Ecosystem status and temperature are different problems, so use that guide only if the ecosystem itself is not established.
6. Check Whether the Temperature Problem Is Resolved
After changing a heater, pump, or aquarium setting, take a moment to verify the result.
Use this checklist:
- ☐ The affected species' temperature requirements have been checked.
- ☐ The correct habitat or water temperature control has been selected.
- ☐ The temperature is now within the required range.
- ☐ The simulation has been allowed to run after the adjustment.
- ☐ The animal's welfare information has been checked again.
If the animal is still too cold, return to the appropriate section above. Check the displayed temperature before buying more equipment or rebuilding the enclosure.
Temperature is not the only possible welfare problem
If the temperature warning disappears but another problem remains, troubleshoot that issue separately.
For example, pollution can affect your zoo's environmental conditions. If pollution is the actual problem, follow the dedicated Planet Zoo 2 guide to removing environmental pollution.
Frequently Asked Questions
How do you stop animals from getting too cold in Planet Zoo 2?
Check the species' temperature requirements first. For land habitats, inspect the heater's placement and coverage. For regular habitat water, check the pump's temperature setting if available. For aquariums, use the aquarium's Environment settings.
Why are my animals still cold after placing a heater?
You may be adjusting the wrong temperature control. Land heating does not necessarily correct cold water in a regular habitat or an aquarium. Check which temperature is incorrect before adding more equipment.
How do you change water temperature in Planet Zoo 2?
For water in a regular habitat, inspect the water system and look for a temperature setting on the relevant pump. For an aquarium, select the aquarium habitat and check its Environment settings.
Why can't I see the aquarium temperature setting?
Try briefly unpausing the simulation and reopening the aquarium's Environment settings. This has helped some players, although it is not a guaranteed fix.
Can changing Celsius to Fahrenheit break water temperature controls?
Players have reported pump temperature controls behaving incorrectly after changing units. It is not established that every player will experience this issue. Back up your save before testing further changes if the controls or finances appear abnormal.
Should every animal habitat use the same temperature?
No. Temperature requirements vary by species. Check the affected animal's Zoopedia entry and use the appropriate habitat or water temperature control.
What should I do if the temperature is correct but animal welfare is still low?
Inspect the remaining welfare indicators. The animal may have another unmet requirement, so continuing to raise or lower the temperature may not help.
Final Tip
When animals are too cold in Planet Zoo 2, identify the affected habitat type before changing equipment. Check the species' temperature requirements, use the appropriate control, and let the simulation update before deciding whether another adjustment is needed.
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