You'll need to find a specific topic about animals to write a convincing persuasive speech about them. You might consider promoting pet health insurance, neutering pets, or adopting pets from animal shelters.
These sites have information about "excessive homework." Because one of the studies cites Japanese students as having less homework than Americans, the last site discusses the length of the school year in Japan -- which is usually much longer than the American school year. Also -- Japanese students tend to do more rote memory in class rather than participating in discussions there.