After the enlightened response from
@Chlidonias I have no interest in reading the article since that is a bizarre way of tracking conservation success.
Botswana (which tops this list) has an interesting approach to wildlife conservation. Though I have not been to any African country (yet), I do loosely follow the safari offerings. The approach of Botswana is to cater to the rich. This is not a judgment or slander, just stating the facts. They made a conscious decision to only offer high-end safari lodges in low density in order to subsidize famous conservation units like Okavango Delta (which may be the single most desired photo location on the continent). It is next to impossible to visit the Delta for less than a thousand dollars a day.
The United States also has an interested approach. That is to transfer wildlife management to the individual states (with rare exceptions for endangered species or national park lands). The chief method of fundraising for state game and fish departments is the sale of hunting and fishing licenses (which is why most of them are called "game" departments and not "wildlife" departments). The sale of lottery tickets also subsidizes these programs.
Bhutan has a mandate to promote "gross national happiness" (over gross national product) and has something like seventy percent of their forest still intact. I don't think they allow hunting either?