1881 5 Feb. 4/5 Milk and water as a diet and rubber bones for the back will not do.
1949 N. Streatfeild v. 48 His spare collar and lead, his water bowl, his rubber bone.
1993 A. Higgins vi. 41 On the floor the dog-baskets and rubber play-biscuits and rubber bones for Grete Weiser's miniature Yorkies.