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National Mammal Week 2025

21 - 27 April • Nationwide

National Mammal Week is dedicated to raising awareness and promoting conservation of British mammals.

Did you know?
One in four mammal species in the UK are at risk of extinction, highlighting a growing crisis for mammals.

About National Mammal Week

National Mammal Week, brought to you by the Mammal Society, is a celebration of Britain’s mammals and an opportunity to raise awareness of the challenges they face.

One in four UK mammals are threatened with extinction, with many others in decline. The British Isles are home to many species of mammal, from the tiny pygmy shrew to the giant fin whale. And yet, mammals are some of the most under-recorded species in Britain.

From April 21st to 27th, the conservation sector, volunteers and nature-lovers come together to celebrate these remarkable creatures and raise awareness about their conservation.

Through a series of engaging events, educational activities, and community initiatives, National Mammal Week offers a unique opportunity to learn about the importance of mammalian biodiversity and the urgent need to protect it. Whether you're exploring local habitats, attending informative workshops, or participating in citizen science projects, there's something for everyone to enjoy during this week-long celebration.

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2025 theme: Where The Wild Things Should Be

This year, we're exploring the theme Where the Wild Things Should Be, highlighting how much wilder our nature-depleted landscapes should be—and how everyone can play a role in restoring them.

This campaign advocates for the return of Britain’s wild mammals to the places they once roamed and raises awareness about the critical need to rewild urban spaces, rural areas, and beyond.

We invite everyone to participate in restoring the balance of nature and ensuring wild mammals can thrive where they should be: in our communities, landscapes, and hearts.

Take part in the Mammal Discovery Challenge

All work to protect and restore wildlife starts with good data. If we know what animals are in a landscape, and which are not, we can identify how to take action to help what is there and enable missing mammals to return to the places they once lived. No one is better placed to discover what mammals are in an area than those who live, work or study there every day!

This nationwide citizen science project aims to encourage and enable people of all ages to help address the lack of data on mammal populations in Britain by monitoring and recording the mammals visiting their gardens and local areas. You can use a variety of easy and fun methods to record mammals, including footprint tunnels and camera traps. In all cases, participants are asked to submit records of the mammals they detect on our free Mammal Mapper app, available for Android and Apple devices.

Join us this National Mammal Week in 'filling in the gaps' in mammal knowledge, so we can fill in the gaps in the landscape where our important wild mammals could and should thrive!

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