Complex sentence: Bart says goodbye to Santa's Little Helper and says that he should not have killed the bird, Homer however manages to get into a fight with an angry and sociopathical ostrich which then turns onto Bart.
Split into simpler sentences: Bart says goodbye to Santa's Little Helper and says that he should not have killed the bird. Homer manages to get into a fight with an angry and sociopathical ostrich which then turns onto Bart.