Here are just five of them -
1- Don't buy a dog, adopt one. The more people who buy dogs the more unwanted dogs there are.
2- Buy only cosmetics that are NOT tested on animals and check that applies to the ingredients too. This is important, because many companies might not test the finished products on animals, but they will test the ingredients.
See the Leaping Bunny site for details - http://www.leapingbunny.org/indexcus.php and http://www.gocrueltyfree.org/
3- Never ever, under any circumstances buy fur.There is no such thing as cruelty free fur.
4- Buy Fair Trade products as much as you can. Fair Trade, means the producer and workers have been given a fair price.
5- Use humane rat or mouse traps. These will get pests out of your home alive without harming them.