The Microscopic Zoo was one of the projects built by the Brobots. It was exactly what the name implied: a microscopic zoo which rested on the head of a pin, which itself was held in a huge set of tweezers under a giant microscope. The zoo is known to include a camel, monkey, seal and elephant; it is unknown whether these animals were miniaturized or genetically engineered on a microscopic scale. Phineas noted that a microscopic newspaper machine outside the zoo mentioned that it was turning a "record profit", raising the question of microscopic people. There may even be a microscopic city on the pin, with its own population blissfully unaware of what "microscopic" means. The Microscopic Zoo, the pin on which it rested and the accompanying microscope disappeared before Mom could see it, but it is unknown whether they were stolen by Santa Claus or destroyed when the Brobots rampaged.