Researchers Tested Raccoons With Puzzle Boxes
Study results show how urban raccoons use advanced problem-solving skills to overcome obstacles at home.
Updated on Oct. 10, 2026 in Wildlife
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University of British Columbia researchers found that 14 of 16 adult raccoons successfully solved a complex nine-way puzzle box. The study highlights the sophisticated problem-solving capabilities of raccoons, an animal known to thrive in urban environments.
Why it matters
Understanding how raccoons manipulate latches, doors, and knobs helps homeowners identify why common wildlife-proofing methods sometimes fail. These findings show that raccoons can learn complex sequences even when they are not hungry.
Of 16 raccoons tested with a 25.4-centimeter Plexiglas box featuring nine entry points, 14 successfully navigated all difficulty levels. Each animal participated in 50 trials over 10 nights, often solving multiple mechanisms despite not being food-deprived.
The players
University of British Columbia
A public research university that leads studies on animal behavior and urban ecology.
National Wildlife Research Centre
A federal facility in Fort Collins, Colorado, that supports investigations into wildlife biology and population management.
The details
Researchers at the National Wildlife Research Centre used a custom Plexiglas cube containing latches, sliding doors, and knobs to observe raccoon behavior. The animals were presented with a marshmallow reward and tasked with navigating the mechanism within a 20-minute window. Results showed the raccoons were capable of learning to manipulate multiple obstacles sequentially to access food.
Timeline
In 2021, researchers gathered data on urban raccoon occupancy levels.
The Home Front
This research provides a look at the cognitive mechanisms that drive the documented trend of raccoons adapting to high-density urban settings. It suggests that common physical barriers in homes may be insufficient against these adaptable animals.
Homeowners should treat secured bins as puzzle-prone areas, as raccoons are capable of learning how to operate knobs and latches. If you have recurring wildlife issues, consider using heavy-duty bungee cords or complex locking mechanisms to upgrade your outdoor storage.
The takeaway
Raccoons possess the intelligence to navigate multi-step mechanical challenges, meaning that simple latches or sliding doors are often no match for them. Homeowners should assume that any accessible storage box or trash container requires a high level of security to stay raccoon-proof.
Further reading
Learn more about local animal behavior and management in the Wildlife section.
Source note: This article includes information reported by The Times of India.
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Should urban wildlife management strategies be specifically adjusted to account for animal problem-solving intelligence?
