This piece is sterling silver and is a pet care piece. This helps with the health of your pet, any pet. It can be a cat, dog, bird or your pet snake. It doesn’t matter. Both the charm and chain are sterling and you just wear it when you are helping your pet. We have found the best way to use it with cats or dogs is by either brushing or petting them from the head to the tail. With fish it would be when feeding them or cleaning the bowl or tank. For birds while holding them, feeding them or cleaning the cage. That is the same for all other pets. If you are dealing with skunks, opossum, Fox or raccoons this would all be when you lay the food down. I’m not telling you to feed Fox or raccoons as they can carry rabies, mine don’t have rabies. My ground hog is as big as a bear but his one child did get sick and I used this to fix them. They are perfectly fine now. I also used this on Lucille Cabbage Ball. He started shaking his head when he ate and I saw a tooth issue. He doesn’t have the tooth issue anymore. The one cat I use it on a lot is Oskie the Rotted Spot. Oskie is OLD!!! Honestly you would think he’s about 5 years old only! He’s got good meat on him, no cataracts and has his full balance and good appetite. I honestly think he got into some immortality water!