At least once a year or more, I replenish the dogs' mammoth bone stock. The feed store sells these for $10 each. Because they're roasted, there's a lot of loose pieces and fat that needs to come off before they're brought into the house, so we start with a bone picnic for the four canines of Run*A*Round.
Little Louise (Catahoula female, 8 yrs. old)
Thelma Jean (Catahoula/Pointer female, 8 yrs. old)