The original name of the format adapted as the UK television series Dragon's Den was Money Tigers.
Money Tigers was a Japanese television programme that supplied the core structure later used by the British adaptation. Entrepreneurs present businesses to wealthy investors, explain how much money they want and negotiate over a possible ownership stake.
The international format was adapted under different titles in different markets. In Britain, investors became dragons; in the United States, the related version became Shark Tank. These names reflect local branding, but the underlying pitch-and-investment mechanism comes from the Japanese source.
The title is sometimes confused with the British programme's own name or with American terminology. Money Tigers refers specifically to the Japanese original. Knowing that distinction clarifies the relationship between the UK series and the broader television format rather than treating each national version as unrelated.