IUCN SSC
Our website serves as an information hub for researchers, conservation professionals and keen naturalists who are interested in the world’s rodents, shrews, moles, solenodons, hedgehogs and treeshrews.

Latest: April 4th is World Rat Day!
Read about some of the world’s most diverse and fascinating small mammals.
Photo: Kevin C. Rowe

Latest: March 2025 Red List update
The IUCN Red List of Threatened Species has just published its first update of the year (27th March 2025), including reassessments for many small mammal species. This time around, most species stayed in the same category, with a handful moving to less threatened categories.
Photo: Dr Jan Decher.

Latest: Trans-national action planning for the Iberian Desman
In January 2025, more than 40 Iberian Desman experts from Andorra, Spain, France and Portugal met to develop a trans-national conservation plan.

Latest: Centre for Species Survival welcomes Nora Weyer!
Alpenzoo and the IUCN SSC Small Mammal Specialist Group (SMSG) – who have collaborated to create a Centre for Species Survival – are pleased to welcome Nora Weyer to the team.

Latest: BeaverCon 2024
A group of Middlebury College students working with IUCN SMSG deputy chair Dr. Alexis Mychajliw had the wonderful opportunity to attend BeaverCon in Boulder, CO.