The dog crates are suitable for most small and medium animals with 4.5'L x 4.5'W x 4.8'H dimension, providing ample space for your pets to rest and play in a friendly and safe environment. The dog kennel is designed with minor raised legs for sturdiness, you can push down the legs into the ground and use stakes or anchoring bolts for extra stability (not included). The metal dog playpen house is also can be used for cat, chicken, duck and so on. The dog kennel dog enclosure with expandable design for only expand the kennel in directions with same parts#, and you won't be able to use the tops if expanding.