Accident and illness coverage is the backbone of most pet insurance policies, and it is also where the fine print does the most damage. This section explains what these plans actually pay for after a torn ACL, a swallowed sock, a cancer diagnosis or a sudden emergency visit, plus the waiting periods, exclusions and reimbursement math that decide your out-of-pocket cost. We write from first-hand underwriting experience as a former provider, now working as a licensed independent comparison broker (NPN #17028173). Useful if you are choosing a first policy or questioning whether your current one holds up.