31. "They're colorful and you can get them into a small terrarium ," 32. Young ones, downy and delicate, climb the walls of a miniature terrarium on her desk. 33. It is sometimes seen in captivity and as an arboreal species, requires a vertically oriented terrarium . 34. Cath arrives the next day with a sledgehammer, and tries to smash the sandkings'terrarium . 35. The concepts of the proper aquarium and terrarium were developed later by Nathaniel Bagshaw Ward in 1829. 36. Unfortunately, the poster falls into Manny's terrarium , killing the pet turtle Shel Turtlestein. 37. This happens because moisture from both the soil and plants evaporates in the elevated temperatures inside the terrarium . 38. They require at least a 50-gallon or larger terrarium and must have appropriate bedding and supplies. 39. They can be kept easily in a terrarium that measures at least four times its leg span in length. 40. These tarantulas are arboreal; so the vertical space of their terrarium is more important than the ground area.