1/7 The Guinness World Records has celebrated its 50th birthday. Here's the shortest living dog - tiny Pinocchi who measured only 20.3 cm long on 23 May 2003 in Florida, USA
2/7 And Danka is the smallest living dog- she's just 18.8cm long and weighs around 800g
3/7 Tallest rideable bicycle - Brad Graham successfully rode his SkyCycle, which measures 4.34 m to the handlebars, on 1 July 2003 in Ontario, Canada. The bicycle has only two wheels and no stabilisers
4/7 Fastest sack race - the 4 x 100 m record is 2 minutes, 29.09 seconds and was set at Ivanhoe Grammar School, Victoria, Australia on 17 June 2003
5/7 Largest horn circumference - Lurch, an African watusi steer from Arkansas, USA had horns that measured 95.25 cm
6/7 Fastest 737 aircraft pull - a team of 10 Royal Marines pulled a Boeing 737-300 a distance of 100 m in 43.2 seconds at Manchester Airport on 27 January 2001
7/7 Largest collection of yo-yo's - John Meisenheimer of Florida, USA has a collection of 4,251 different yo-yo's that he has horded since 1971
