A penguin at the San Diego Zoo was waddling a little taller this week thanks to a pair of custom shoes. Lucas, a 4-year-old African penguin, developed a spinal infection early in life, which left him with weak muscles in his legs and an inability to stand upright on his toes properly, according to a news release from the San Diego Zoo. Link in bio. #sandiegozoo #sandiego #penguin #penguinsofinstagram #zoo