Enriching your pet's daily life starts with supporting natural behaviors such as exploring, playing, hiding, and chewing. Moss Hollow & Tweeters Natural Wood Chews are designed with these natural behaviors in mind and is constructed from 100% pet-safe materials, allowing you to nurture your pet's mind and body is safe and fun ways every day. Provides entertainment and prevents boredom Safe chewing materials promote dental wear Innovatively designed to meet key instinctual needs of small pets Encourages mental and physical enrichment Wide assortment of sizes to optimize fun and stimulating play Made with safe, natural wood Wood Sizes: Small Rounds Pack (approx.): 0.78" x 0.78" x 0.98" (2cm x 2cm x 2.5cm) Medium Logs Pack (approx.): 2.76" x 0.78" x 0.98" (7cm x 2cm x 2.5cm) Large Rounds Pack (approx.): 0.78" x 1.57" x 1.77" (2cm x 4cm x 4.5cm)