Zeal Free Range Naturals Beef Hooves Dog Treats are 100% pure natural New Zealand beef treats for dogs. Zeal Beef Hooves is a durable chew that will entertain your dog for along time, no mess, no fat, no oil, just pure goodness and fun. Free of any additives, colorings, flavoring, preservatives, antibiotics, vaccines, steroids and are also free from hormone growth promotants.