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Does dog behavior change with the moon phases?

CYSF · 2026

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Overview

Every night for about a month, I am watching my dog and writing his behavior onto a graph to see the impact of the moon phases.

Problem

Challenges I may face are . . . Because I'm moving there are plenty of boxes and changes to his lifestyle. Resulting in maybe being more scared or excited than normal.

Method

1. I made a chart with the date and moon phases. 2. I made a rating scale to test his behaviors\, including: Responsiveness\, Sleepiness\, Playfulness\, 3. I observed his behavior everyday at the same time for a month 4. I tracked his behavior and rating in a table 5. I compared his behavior to the moon phases 6. I analysed data and made a conclusion

Research

Some people believe that animal behavior is influenced by the moon cycles, and the amount of moon light. My experiment is testing to see if this is true.

Data

Data and moon phase Playfulness Sleepiness Responsiveness

Nov 18

WaningCrescent

Nov 19

New moon

Nov 20

WaxingCrescent

Nov 21

WaxingCrescent

Nov 22

WaxingCrescent

Nov 23

WaxingCrescent

Nov 24

WaxingCrescent

Nov 25

WaxingCrescent

Nov 26

WaxingCrescent

Nov 27

First Quarter

Nov 28

Waxing Gibbous

Nov 29

Waxing Gibbous

Nov 30

Waxing Gibbous

Dec 1

Waxing Gibbous

Dec 2

Waxing Gibbous

Dec 3

Waxing Gibbous

Dec 4

Full Moon

Dec 5

Waning Gibbous

Dec 6

Waning Gibbous

Dec 7

Waning Gibbous

Dec 8

Waning Gibbous

Dec 9

Waning Gibbous

Dec 10

Waning Gibbous

| Dec 11

Third Quarter | 1 | 1 | 3 | | --------------------- | --- | --- | --- | | Dec 12

WaningCrescent | m |

|

| | Dec 13

WaningCrescent | m |

|

| |

|

|

|

| | Dec 14

WaningCrescent | m |

|

| | Dec 15

WaningCrescent | 1 | 1 | 3 | | Dec 16

WaningCrescent | m |

|

| | Dec 17

WaningCrescent | m |

|

| | Dec 18

WaningCrescent | 1 | 1 | 2 | | Dec 19

New Moon | m |

|

| | Dec 20

Waxing crescent | 1 | 1 | 3 | | Dec 21

Waxing crescent | 1 | 2 | 3 | | Dec 22

Waxing crescent | 1 | 1 | 2 | | Dec 23

Waxing crescent | 1 | 2 | 3 | | Dec 24

Waxing crescent | m |

|

| | Dec 25

Waxing crescent | 1 | 2 | 2 | | Dec 26

Waxing crescent | 1 | 2 | 2 | | |

Conclusion

Conclusion: My conclusion is that, no, dogs behavior does not change with the moon phases. I have looked at the biggest moon phases and the behavior was the exact same for both. If you also go deeper into the other moon phases, there is no significant difference in the behavior. This finding may be different with different breeds or activities (by that I mean, my dogs a border collie, he just lays around all day. But other border collies may be herding sheep and running around a farm yard). But a regular sleep, energetic house dog’s behavior does not change with the moon phases

Citations

https://books.google.ca/books?hl=en&lr=&id=oIzuEAAAQBAJ&oi=fnd&pg=PT6&dq=how+are+dogs+brains+connected+to+their+activities,&ots=UHZJoCrfnq&sig=wCsZLAQGWsQni4UVbHtQtrBRrLA#v=onepage&q=how%20are%20dogs%20brains%20connected%20to%20their%20activities%2C&f=false

https://www.timeanddate.com/moon/phases/

https://biohackersunited.com/blogs/news/the-moon-s-impact-the-human-body https://link.springer.com/article/10.3758/s13420-011-0041-7

Acknowledgement

Ms. Phillips - science fair teacher at CGCS, thanks for overlooking my project Ms. Godau - science fair teacher at CGCS, thanks for helping me with my question Mr. Gallant - science fair teacher, thanks for helping me with my hypothesis My mom - helping me with my writing and overlooking my project Charile - my dog - thanks for being my project

Awards (1)

  • HONOURABLE MENTION

Competition history

  • CYSF 2026 Category not listed

Resources

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Source: Calgary Youth Science Fair

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