Kaytee Mini Nut Knot Nibbler is a colorful play toy for small animals that is safe to chew. The mini sized nibbler is ideal for hamsters, gerbils and mice. Your pet will have hours of fun chewing and gnawing to get to the nut treat that is trapped in the center. 100-Percent natural wood has safe vegetable dye coloring. Actual size is 2-1/2-inch round toy.