[1] The channel began to shift its focus in the early 2000s in an attempt to increase viewership, by incorporating more reality-based series and, in 2002, it was briefly removed from TV Cabo platform, currently NOS, due to very low ratings and viewers satisfaction when compared to its direct competitors: Odisseia, Canal História, and National Geographic Channel.

In the early days, the channel was dubbed in Portuguese in São Paulo, Brazil.

Foreign documentaries when airing in Portuguese national television only narration is dubbed and in-screen presenters are always subtitled, but Discovery choose to do complete dubbing with Portuguese narrators, who were not used to it, failing to do a convincing work, and since 2008 the complete reverse is done and all shows are subtitled in Discovery Channel, only the older TV shows are dubbed.

[3] In 2014, it was the most watched factual television channel in Portuguese cable, for 35 continuing months, with a share of 0.71%.

Its main target audience are men between 25 and 44, in which its market share is 1.60% and also the most watched factual channel.