Great quality worth the price
Got this for 2 cats to sleep in at night sometimes and kittens to be nursed in.
It's good size, litter box fits in easily and it's all stable enough to attach for example a hammock or a board inside to create 2 levels (by DIY). Definitely great for smaller to medium animals. (Expcept probly small mice and young rats, who will be able to squeeze through the bars.) The locks are secure and can't be opened by clever paws poking around. I wrapped a blanket over the bottom part (wrapped the corners to go underneath) so it stays nicely in place even when kitties roll around. Top opening is useful. Cats like it. The building together was a bit tough (as a girl) but no more difficult than any IKEA piece of furniture and all parts fit together in the end. Compared to the flimsy sort of cages/kennels you can get, which are smaller, less secure, and less practical (no top door), this one was well worth the price.