There are more than 50 types of wild mammals in Britain but many of them are under threat.
Press Packer Becky and her friends spend time looking for mammals and in her report she tells us what they do.
"My friends and I have made up our own club.
We go around looking for mammals such as voles, mice, badgers, foxes and a few others.
We search in exactly the right sort of habitat to find these animals.
We are very quiet, careful and patient to make sure that if there are any animals we find them.
We would never harm the animals but we are worried other people are hurting them and taking them from their natural environment.
Despite our efforts we rarely find many
I think people need to be more aware of the dangers UK
mammals are in.
I don't know how many groups there are
that do the same sort of thing as my friends and I but I would like to think there are lots."
Becky, 10, Shropshire
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