<https://www.dinewild.com/antlers/why-do-deer-rub-their-antlers-on-trees/>
<http://schema.org/description>
"Antlers are enclosed in a delicate, plush skin known as velvet, which is bursting with blood vessels and provides crucial nutrients for the antlers to sprout."
<https://www.dinewild.com/antlers/why-do-deer-rub-their-antlers-on-trees/>