I took a chance and ordered the charm. I ordered the heart with the crossed bones. It's a great size for a cat or tiny dog. My dog is a Great Pyrenees. It's so tiny, the clasp cannot even fit over the metal D ring on her collar. Skip these if you have a large or giant breed like me. You can get nice keychain charms at many stores that are appropriate size for the giant breeds. This charm is now on a zipper on my girl's Service Dog pack. The charm is sturdy and has held up to being on a zipper, so great for little dogs.
The heart charm was much larger than I expected. We bought it for our cat and with the large clasp it's over 2 inches long for sure. However, it's well made and good quality, would probably work well for a dog. Although it hangs down to her kitty knees, our cat Mrow Mrow seems to really actually like her charm, and has been showing it off since we clipped in on her collar. I would recommend this charm to anyone. (P.S. Our cat is an average sized short haired kitty, maybe six pounds, if that helps). :)