Organic Raw Baltic Amber Collar for Dogs and Cats Hand-made from raw Baltic amber, our pet necklace is safe for humans and animals, with no secondary effects on your pet, family or home. Can be used for all pets, even if they are young, allergic, pregnant or nursing. We hope you will love it! We kindly ask you to measure your pet's neck accurately before ordering. For the best fit you should allow for a finger or two between the collar and the neck. The necklace has to fit tightly around your pet's neck, but not interfere with breathing. If in doubt, order larger size!