Complex sentence: Garfield sometimes communicates with Pooky as if he were a living animal; he can also be over protective of Pooky-once Garfield tried to "protect" Pooky from a present from Jon to Pooky-a miniature accordion.
Split into simpler sentences: Garfield sometimes communicates with Pooky as if he were a living animal; he can also be over protective of Pooky. Once, Garfield tried to "protect" Pooky from a present from Jon to Pooky, a miniature accordion.