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
British big cats conflicting reports of DNA evidence as to the existence of big cats in Britain: In 2011 it was announced by the Centre for Fortean Zoology that DNA testing, carried out by Durham University on hairs found in north-Devon, showed that a leopard was living in the area. In 2012 it was announced that DNA testing on two deer carcasses found in Gloucestershire found only fox DNA, despite many locals reporting sightings and believing that the deer had been killed by a big cat. The research group Big Cats in Britain publishes reported sightings annually by county. The "top ten" counties