Young trees; those 1 to 4 inches in diameter with smooth bark are especially susceptible, such as maple, magnolias and birch. Young, soft-wooded, pliable saplings, especially pine and bald cypress, are also targets.
Yes. Scrimshaw is commonly applied to antlers, horns, bone, and even teeth and tusks (wild boar, etc.), provided that the surface is prepared properly by sanding to smooth the surface...