to obey simple commands. Understanding how to take care of a pet fish is fairly simple, though does require you to constantly check the water quality in your fish tank. Clean your fish tank once per week, replacing 15% of the water when necessary. Use a suction-based system to siphon out any debris that collects on the bottom of the tank. Knowing how to take care of a fish also means that you will need to provide a proper diet. A fish's diet depends largely on its species. For example, there are different fish food formulas for goldfish and beta fish. You can also find a lot of good info by searching for "how to take care of a pet fish" online. Depending on the type of bird that you own, you may have to make certain adjustments to keep your bird happy. Some birds don't require social interaction, and are content to simply be "display" birds. Other birds will turn to destructive behavior when not constantly handled by their owners. Understanding how to take care of a pet bird means that you will have to do research. Some birds have very specific dietary requirements, and can only eat special diets. When purchasing a bird cage, be sure that it is made of a non-toxic material. Avoid any metal cages that are coated with paint, since many birds may chew on their cage. It's also best to avoid plastic cages, since they are often made of material that can be