What is a very small animal similar to mouse and has the letters hersw?

The animal you're thinking of is likely a shrew.

Shrews are small, mouse-like mammals with pointed snouts and tiny eyes. They are often confused with mice, but they have some key differences.

Here's why "shrew" fits your description:

* Small: Shrews are very small, typically only a few inches long.

* Mouse-like: They have a similar body shape and appearance to mice.

* Letters hersw: The letters "hersw" can be rearranged to spell "shrew".

Let me know if you have any other animal riddles!