Barefoot grass running?

Whenever I'm running around with my dog in the field behind my house, I feel like I can keep going and it actually feels fun. Something about putting a pair of $100 running shoes on gives me odd almost saddening feelings (which most likely won't make sense to you but I get depressed on unusual things hah), but barefoot I just love it so much. Is barefoot running safe though? Could I injure my feet?