I thought it might be interesting to have people list the positive and negative things we as tourists do/can do to help wildlife and the environment. I'll start it off with a couple - then feel free to add your comments:
Don't waste water. Take short showers.
If there are fences around your lodge or camp don't walk up near them, particularly if there is wildlife on the other side - you might be sorry.
If you are staying multiple nights in the same lodge/tented camp tell your steward that he/she doesn't need to put clean sheets on every night. Just straighten the bed. After all, how many of us strip our beds daily at home and put on clean sheets?
If you are on a game drive and see a water bottle, plastic bag, bottle cap, baseball hat on the ground please ask your driver to stop - then ask him if it safe for you to get out and collect the rubbish. An animal playing with or eating the item could choke or suffocate on it.
If your vehicle is rushing to join 20 other at a sighting, please ask the driver to go back later after the other vans have left. Don't harrass the animals by boxing them in.
Please don't bang on the side of the vehicle or whistle for an animal to get its attention.
Just enjoy them in their own environment doing what they do naturally.
Never, never throw anything at an animal.
Perhaps others might share some of their tourist do's and don'ts.