An animal toy includes structure presenting regions having characteristics providing different degrees of animal interest andor accessibility, such that there is a higher likelihood that a dog will retain a particular part of the toy in its mouth apart from another region intended for grasping by the owner. An optical device is included in the optical system and is configured to communicate with the optical component. Each robot and machine is operated by a parametric computer program. Other embodiments are described and claimed. When these strands are wound to form the tubular reinforcing member, the inner surface of the reinforcing member includes a lubricious surface.