Traders assign a 96.4% implied probability that Little Joe the gorilla will not escape again before July 31, driven primarily by the 33-year-old silverback’s advanced age and reduced agility compared to his 2003 breakout from Franklin Park Zoo. Extensive enclosure upgrades implemented since that incident, combined with 23 incident-free years and his upcoming transfer to Pittsburgh Zoo for a breeding program, further reinforce the market’s strong consensus. Recent zoo announcements highlight coordinated moves to maintain genetic diversity among critically endangered western lowland gorillas, with new facilities expected to prioritize enhanced security. A realistic upset would require an unforeseen lapse during the relocation process or an unprecedented agility surge, though historical patterns and current conditions make such scenarios unlikely in the near term.