保护动物的英语标语可以激发人们的环保意识，以下是一些建议的标语：

1. Protect wildlife, protect our future.

2. Save the elephants, save the world.

3. Stop poaching, save the rhinos.

4. Endangered means we have time, extinction is forever.

5. Love animals, don't hurt them.

6. Save the oceans, save the whales.

7. Stop animal cruelty, it's inhumane.

8. Keep our planet healthy, keep our wildlife thriving.

9. Respect all creatures, big and small.

10. Be the voice for those who cannot speak.

这些标语强调了保护动物的重要性，并鼓励人们采取行动来维护生态平衡和地球的健康。