One in four UK mammals are threatened with extinction.

The British Isles and Ireland are home to many species of mammal, from the common shrew to grey seal. We work toward a future where populations thrive as part of healthy and diverse ecosystems benefiting people and nature.

Credits: Alex Montacute
Credits: Alex Montacute

Current research View all

Current research
Small Mammal Research
Small Mammal Research

The Mammal Society is investing time and expertise into improving data on small mammal populations and their relationship with landscape health and resilience.

Wales Mammal Biodiversity Action Forum
Wales Mammal Biodiversity Action Forum

WMBAF aims to strengthen and unite work to study and conserve mammals in Wales.

National Polecat Survey
National Polecat Survey

Polecats were once a common and widespread native mammal present across the British Isles. Vincent Wildlife Trust has monitored its recovery since the 1990s using National Surveys that rely on the public to submit records of polecat signs and sightings. Science-led

Science-led
Searching for Shrews
Searching for Shrews

The greater white-toothed Shrew (GWTS) has now been identified in Sunderland and is known to be an invasive species in Ireland, at the detriment of the pygmy shrew (a native species in the British Isles). Science-led

Science-led

Discover British mammal species

With approximately 90 species spanning across land, air, and sea, there are many fascinating creatures to learn about. From iconic land-dwellers like red foxes and badgers to majestic marine mammals like seals and dolphins, the British Isles are home to a rich tapestry of mammals.

Credits: Shane Stanbridge
Credits: Shane Stanbridge

News and stories View all

Blog
Attending a Beaver Ecology and Conservation Training Course
Attending a Beaver Ecology and Conservation Training Course

Eilidh Cooney is a career changer based in Perth, Scotland. Here, she tells us about her recent experience after being awarded one of the Mammal Society’s Golden Tickets.. 3 Min Read

3 Min Read
A weekend of mammal discovery: My experience at a Mammal Society training course
A weekend of mammal discovery: My experience at a Mammal Society training course

In the lead up to this year’s National Mammal Week (21st – 27th April), NHBS was kindly invited by The Mammal Society to attend their new Mammal Identification and Ecology residential training course. 4 Min Read

4 Min Read
Wild shots: Celebrating UK mammals at Swansea University
Wild shots: Celebrating UK mammals at Swansea University

The results are in… winners of the SUCES UMAC photography competition! 5 Min Read

5 Min Read
Small Mammals, Big Impact: Our UMAC Journey at Swansea University
Small Mammals, Big Impact: Our UMAC Journey at Swansea University

Hear about Molly’s experience of UMAC 2025 at Swansea University! 5 Min Read

5 Min Read

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Join the Local Groups Network

A growing movement of mammal enthusiasts across Britain.

From the world of mammal conservation

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Discover the Local Groups Network

Our local groups support a growing movement of mammal enthusiasts across the British Isles and Ireland. Discover a group near you and join alongside like-minded individuals who are dedicated to safeguarding mammals.

From the world of mammal conservation

Stay informed about the latest mammal news, tips and events in our newsletter.

Take part in National Mammal Week 2024

Find out how you can get involved in National Mammal Week this 2024.

Join your local mammal group

A growing movement of mammal enthusiasts across Britain.