Our Sadie Baby loved her Christmas present! This is a real bone - a femur (cow I think, but it could be the guy who pulled in our drive way the other day, she hates when people do that....) She is a powerful chewer, and we figured this would last her awhile. On New Years Day I picked up the small pieces of what was left of this bone. She has one bit left, about 4 inches long that she hasn't cracked yet into pieces too sharp or too small to be safe for her. Mike is now looking for something from a Mastadon for her(the boys have been wanting to visit the Smithsonian since watching "Night At The Museum"). Maybe that would last a whole month, instead of only 7 days!