CinemaBlend The Big Bang Theory reigned as one of televisionâs biggest comedies during its 12-season run. One of the main reasons for its success was the insufferable, yet lovable, Sheldon Cooper, played by Jim Parsons. Fans know that Sheldon had many quirks, but many were surprised when the typically animal averse scientist adopted numerous cats. This fact was Parsons, who is allergic, and the actor recently recalled what it was like working with cats on the set despite this. Jim Parsons mastered the intricacies of Sheldon Cooper over The Big Bang Theory's 12 seasons, and the character's eccentricities would put the actor in some interesting positions. Most recently, he and former