Can cats eat apple core?

Avoid
Core is not recommended due to choking and seed exposure risk.

Quick notes

Sources

All pets (comparison)

Pet Safety Notes
Dog Avoid Core is a choking/obstruction risk and may include seeds.
Cat Avoid Core is not recommended due to choking and seed exposure risk.
Rabbit Avoid Core is not recommended due to choking risk and seed exposure.
Parrot Avoid Core is not recommended; remove seeds and core before feeding apple.