Enriching your pet's daily life starts with supporting natural behaviors such as exploring, playing, hiding, and chewing. Moss Hollow Mineral Stones are designed with these natural behaviors in mind and are constructed from 100% pet-safe materials, allowing you to nurture your pet's mind and body in safe and fun ways everyday. Contains salt and essential trace minerals Cage attachment twists on back of stone Safe chewing materials promote dental wear Supports your pet's instinctual chewing and playing behaviors Good for rabbits, guinea pigs, chinchillas, hamsters, rats, and more! Styles: Corn: 4.72"L x 1.57"W x 0.79"D (12cm x 4cm x 2cm) Carrot: 4.33"L) x 1.38"W x 0.79"D (11cm x 3.5cm x 2cm) Apple: 2.76"L x 2.36"W x 1.18"D (7cm x 6cm x 3cm)