The International Otter Survival Fund (IOSF) is one of the world's leading otter charities. In the UK IOSF is the only charity solely dedicated to the conservation, protection and care of otters based on years of scientific research in the UK and around the world.

IOSF has been vetted and approved to receive grants from CAF America; if you are a US donor wishing to make a tax-deductible contribution to support us, you may give to CAF America and recommend that the grant be made to IOSF.

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