It takes a close look, but our freckle faced girl here, with gold painted necklace and rings, holds a pet squirrel in her lap! And indeed, wild squirrels were not uncommon pets in the Victorian era, caught in the wild, especially as babies, and kept mostly by children. A few scratches to the surface of the tintype here, including one running across the nost of the squirrel, but still! 

4" x 2 3/8" in sleeve. A few notable scratches as described above and detailed in photos. In originally sleeve, to which it appears still adhered, so I have left in place.