Archive · 2 Jan 2026
Study Finds Humans Predominantly Monogamous Compared to Chimps
A new study looked at how faithful humans are in relationships compared to other animals.
Researchers studied 103 human groups from different times and places, as well as 35 other mammal species.
They found that humans are about 66% monogamous, which means most people have one partner at a time.
This makes us more like beavers and less like chimps, which are not very monogamous.
The study also shows that being monogamous helps animals take care of their babies better.
Even though divorce rates are going up, the study suggests that being monogamous is natural for humans.
Different animals have different levels of monogamy, with some species like the California deermouse being very monogamous and others like the Soay sheep being less so.
Humans are 66% monogamous, qualifying as predominantly monogamous.
Study compared 103 human populations and 35 mammal species.
Humans are more monogamous than chimps but less than beavers.
Monogamy helps species care for offspring and deter rivals.
Human social structures differ from other monogamous species.
- Who
- Dr. Mark Dyble and researchers from the University of Cambridge
- What
- A study comparing human monogamy with other mammalian species
- When
- Published in 2025
- Where
- University of Cambridge and various global populations studied
- Why
- To understand the natural inclination of humans towards monogamy
- Study Title
- Human monogamy in mammalian context
- Journal
- Proceedings of the Royal Society B: Biological Sciences
- Lead Researcher
- Dr. Mark Dyble
- Human Monogamy Score
- 66%
- Most Monogamous Species
- California deermouse (100%)
- Least Monogamous Species
- Soay sheep (0.6%)
- Study Year
- 2025