This generally refers to a large joint bone that is offered not as a meal but to provide your pooch long hours of chewing satisfaction. (dogingtonpost.com)
Some cats will require an open reduction, a surgery in which the joint is opened in order to replace the partially dislocated joint bones. (glenerinanimalhospital.com)
After she started learning all of her training cues I gave her a duck and a cow joint bone she works for me to get a new toy and bone she never knows when she is getting one but if she has a day where she doesn't listen at all I take them away. (pethelpful.com)