Data scope & sources
Family Sciuridae: tree squirrels, flying squirrels, chipmunks, marmots, prairie dogs, ground squirrels, and antelope squirrels. Counts include current native species and confirmed established introduced populations; subspecies, accidental records, and uncertain occurrences are excluded. State occurrence is generalized and does not imply presence in every county.
Taxonomy and core state lists: ASM Mammal Diversity Database v2.5. Distribution and status checks: NatureServe Explorer and official state wildlife agencies. Compiled August 2026.
Established introduced populations checked against official information from California, Florida, Idaho, Montana, Oregon, Washington, and Wyoming.
An original interactive squirrel atlas
© 2026 United Squirrels
United by Squirrels
Where research guides rehabilitation.
Rehabilitation inspires research.
A Science-Grounded Platform for Squirrel Research and Rehabilitation
United Squirrels begins with a simple observation: squirrels are common, but far from ordinary.
Their ability to thrive in cities and other rapidly changing environments, often in close proximity to people, makes them valuable subjects for studying urban ecology, animal behavior, and human-wildlife coexistence.
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To connect squirrel research and rehabilitation so that science improves care, practice informs discovery, and public engagement supports thoughtful human-wildlife coexistence.
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Advance squirrel-focused research.
Expand access to reliable rehabilitation resources.
Promote informed and compassionate human-wildlife coexistence.
Studying how squirrels adapt to urban environments to advance scientific understanding and inform wildlife care.
Research
Bringing research and rehabilitation practice together to improve access to reliable care resources.
Rehabilitation
Supporting students’ academic and professional growth through scientific research, collaborative learning, and practical experience.