Rachel
Your photo is of a tiger moth caterpillar....probably the salt marsh moth caterpillar, but several fuzzy caterpillars look similar that until they turn into adults it is hard to know for sure. Also, they are highly variable in color from blond to brown to black. The face of the salt marsh caterpillar is mostly black, but that does not show in your photo.
The larvae feed on a wide variety of plants from weeds to some crops and some trees. They are not considered a pest of the garden.
