Geriatric epilepsy is a significant clinical problem that has not been studied adequately in animal models. This chapter will review the available literature with particular attention to models that have demonstrated how acute seizures and epilepsy in aged animals differ from those of younger animals. Studies include several strains of mice [e.g., El, DBA, senescence-accelerated mouse (SAM), Cacnb4 knockout] as well as acute seizure models in common strains of aged mice. Aged rats (including Fischer 344, Wistar, and Sprague-Dawley) have been used in acute seizure, lesion, and epilepsy models. This area of research remains largely unexplored and therefore provides numerous opportunities for new investigations.