Oldest Gymnast, Tallest Dog Enter New Guinness World Records (PHOTOS)

New Guinness World Record Holders (PHOTOS)
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Listen up, everyone! Guinness World Records has just launched the 57th edition of its best-selling book of unusual - and, frankly, sometimes unnecessary - global achievements. And this latest version includes recognition for some never-before-recorded accolades.

Among them? There's 86-year-old Johanna Quaas, a retired PE teacher from Germany, who - as you may be able to guess from her picture above - is thought to be the world's oldest gymnast. Way to go, Johanna! Remember, it's less than four years until Rio 2016.

Meanwhile, Egyptian-born Moustafa Ismail has been rightly applauded for having the largest biceps and triceps on the planet...

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In case you were wondering, Moustafa's slightly unnerving guns measure an incredible 25.5in (around 65cm) in circumference.

And Zeus, a Great Dane from Michigan, US, is now officially the world's tallest dog...

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His height? An amazing 44in (around 112cm) from foot to withers. (We're assuming someone's already double-checked he's not actually a horse.)

Other new records listed in the book include the world's lowest-ever car, the shortest bull and the heaviest sportswoman. Take a look at some of the latest amazing record-breakers, below:

Guinness World Record Holders
Heaviest rideable bicycle (01 of12)
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The heaviest rideable bicycle weighs 750 kg (1650 lb) and was built by Wouter van den Bosch (Netherlands) and ridden in Arnhem, Netherlands. (Credit: Guinness World Records)
Heaviest Sportswoman(02 of12)
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The heaviest competing sportswoman living is Sharran Alexander (UK) of London, UK, who weighed 203.21 kg (448 lbs). (Credit: Guinness World Records)
Largest drum set(03 of12)
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The largest drum set is comprised of 340 pieces, is owned by Dr. Mark Temperato (USA) and was counted in Lakeville, New York, USA. Dr. Mark Temperato is a member of the band called Jesus the Soul Solution. He transports the drum set in a custom-built trailer. (Credit: Guinness World Records)
Largest biceps(04 of12)
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The largest biceps male belong to Mostafa Ismail (Egypt) and were measured for left arm flexed at 64.77 cm (25.5 in) and non-flexed 62.23 cm (24.5 in) and for right arm flexed at 63.5 cm (25 in) and non-flexed 60.96 cm (24 in). The measurements were taken in Franklin, Massachusetts, USA which is where Mostafa now resides. (Credit: Guinness World Records)
Tallest mohican(05 of12)
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The tallest mohican measures 113.5 cm (44.68 in) and belongs to Kazuhiro Watanabe (Japan). The length was verified at Bloc de l'art hair salon, Shibuya, Tokyo, Japan. (Credit: Guinness World Records)
Tallest mohican(06 of12)
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The tallest mohican measures 113.5 cm (44.68 in) and belongs to Kazuhiro Watanabe (Japan). The length was verified at Bloc de l'art hair salon, Shibuya, Tokyo, Japan. (Credit: Guinness World Records)
Tallest mohican(07 of12)
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The tallest mohican measures 113.5 cm (44.68 in) and belongs to Kazuhiro Watanabe (Japan). The length was verified at Bloc de l'art hair salon, Shibuya, Tokyo, Japan. (Credit: Guinness World Records)
Tallest mohican(08 of12)
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The tallest mohican measures 113.5 cm (44.68 in) and belongs to Kazuhiro Watanabe (Japan). The length was verified at Bloc de l'art hair salon, Shibuya, Tokyo, Japan. (Credit: Guinness World Records)
Largest collection of Hello Kitty memorabilia(09 of12)
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Asako Kanda (Japan) has 4,519 different Hello Kitty items. Her house is filled with Hello Kitty items, such as Hello Kitty frying pan, Hello Kitty electric fan and Hello Kitty toilet seat! (Credit: Guinness World Records)
Youngest Drummer(10 of12)
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The youngest professional drummer is Julian Pavone (USA) (b. 14 May 2004) as of 21 March 2010, he was 5 years 10 months 3 days old. (Credit: Guinness World Records)
Oldest gymnast(11 of12)
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The oldest gymnast is Johanna Quaas (b. 20 November 1925, Germany) who, at the age of 86 years, is a regular competitor in the amateur competition Landes-Seniorenspiele, staged in Saxony, Germany. She performed a floor-and-beam routine on the set of 'Lo Show dei Record' in Rome, Italy. (Credit: Guinness World Records)
Largest collection of Barbie dolls (12 of12)
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Bettina Dorfmann (Germany) has 15,000 different Barbie dolls, that she has collected since 1993. (Credit: Guinness World Records)