The KONG CoreStrength is a durable chew toy built for dogs with persistent chewing habits. Its multilayered core — constructed from styrene butadiene styrene and polypropylene — is engineered to withstand extended chew sessions while giving dogs something meaningful to work on. The textured exterior adds sensory interest during play. Sizing is suited to small and mini breeds.

The reinforced core layers are the defining feature: each layer adds structural resistance so the toy degrades gradually rather than failing suddenly, which is both safer and more durable than single-material chew toys for determined chewers. The textured exterior also gives teeth and gums something to work against, adding incidental dental engagement alongside the main chewing benefit. The design holds up for solo play sessions and doubles as an interactive toy for owner-led games.

Owners typically reach for the CoreStrength when their dog has worked through softer toys quickly. The layered construction holds up longer than standard rubber chews for dogs that apply sustained pressure, and the shape makes it practical for fetch or tug sessions when the dog isn't chewing independently.