Hamsters, mice and chinchillas, chew... It's a known fact that their teeth continue to grow throughout their lifetime. They have to chew in order to keep their teeth filled down to a reasonable length in order to eat their food. To keep your pet's teeth healthy, you need to provide them with plenty of chewable items. Antler Rodent Rounds are nature's solution to your pet's chewing needs. They are are 100% natural and loaded with calcium and minerals that your pet will enjoy. Each Rodent Round is approximately .75"-1.5" in diameter and .25" to .50" thick.