This big boy loves to run, dig, explore and mark everything as his own. It's natural rabbit behavior and especially common when you have more than one buck. One way rabbits mark is by rubbing their chins on things - similar to cats. Boys like to also urinate on things - like other animals, but rabbits have a unique ability to thrust their rumps in the air and jump in a circle and fling it everywhere!
Instinctively rabbits will piddle little marking trails that help them navigate in the hours we're still snoozing. Our littlest buns, out for their first romp in the 'Big Garden', can easily navigate back to their house from the adult rabbit trails and it's amazing to observe. This same behavior applies to the herd 'smarty pants' that finds a special escape route to an off-limits area. You fix it and the entire herd, for days to come, checks out what they think is a new trail to greener grass.
Rabbits are especially fun to have around the home and property and this is one unique trait that will help you anticipate behaviors if your planning to bring a rabbit into your home and something to appreciate while observing the special quirks of your funny bunnies!
Be thou diligent to know the state of thy flocks, and look well to thy herds. Proverbs 27:23