This feature could be implemented as a mobile app integration or a physical "maturity indicator" on the toy itself. :

: As the dog chews, a "Warning Yellow" or "Replace Red" inner core is revealed, signaling the toy has reached its safety limit. AI Visual Maturity Scanner (App Feature) : Users take a photo of the toy via a pet management app.

Manufacture toys with a multi-layered core of different colors. : The outer flavor-infused layer is intact.

Integrate with retailers like Petco or Chewy to automatically trigger a replacement shipment based on predicted "maturity" data (e.g., average nylon life is 4.5 months). Maturity Stages for Nylon Toys US4674444A - Chewing toy for dogs and preparation thereof

Mature (Retired) : Alert that the toy is now a choking hazard and should be recycled. :

The AI analyzes the "fraying" or "knuckle wear" against the original dimensions. : Active : Normal flaking; safe for play.