Water Buffalo horns
This is a tough long lasting chew that comes in a range of sizes and has become a staple in my house. It's a single ingredient chew, made up of only water buffalo horn. Water buffalo horn is made from thick keratin; so it is completely edible for the pups. I like to up the enrichment level by putting in treats and freezing them inside. I like to use kibble or freeze dried treats shoved in just enough to stay put. When I freeze it I will add water over the kibble or treats. I would recommend only using water as the horn can be troublesome to clean out otherwise. This often keeps my puppy entertained for 30 minutes or more!!