Do you notice the deep track by the fence line? That deep track is caused by animals pacing back and forth. The Zoo Keeper has created an environment which mimics a Zoo. There is no enrichment for these animals, other than boredom. Oh there is the children’s play equipment because Serio seems to think they are human children and would like to slide down the slide. I’m surprised he hasn’t installed a swing set for them. He might install one in the new areas he is building.