8 Out of 10 Cats Does Countdown as part of its 30th anniversary celebrations. Amongst the programmes that were chosen to be merged for the evening of specials, production teams on "Countdown" and "8 Out of 10 Cats" agreed to merge the two formats of their respective programmes together - the crossover between the two formats meant that "Countdown"s arrangement of games would be interspersed with "8 Out of 10 Cats"-style banter. As part of the merger, both Rachel Riley and Susie Dent assumed their roles from the programme, while Jimmy Carr took on the mantle of host, with both Sean Lock and Jon Richardson competing as
Cats of the Clans Featherpaw and Stormpaw and remained there until the end of the original series. Also, Scourge and Bone are shown with orange collars, instead of purple for Scourge, and red for Bone. A review by School Library Journal praised how the pictures show ferocity of the cats and how "the full-color portraits of these cats are spectacular. They show these characters to be exciting, vibrant, and unique, and will interest new readers much more than the tone-heavy, mysterious musings of the narrator". Cats of the Clans Cats of the Clans is a field guide in the "Warriors" novel series. the novel