Top 10 Dark Truths About How I Met Your Mother

Kids, these are the dark truths about "How I Met Your Mother." For this list, we’ll be looking at some of the reported behind the scenes facts about the sitcom, its cast, and its legacy. Our countdown includes three failed spin-offs, Josh Radnor's dog allergy, Josh Radnor's dog allergy, and more! Did any of these dark truths shock YOU? Let us know in the comments!