World's Weirdest Records..2012 Edition of Guinness World Records.

From 13 skipping dogs to a 54 in pizza, the world's weirdest records

They are the world's weirdest and wildest, largest, smallest, squarest and roundest.

They are the cutest, tastiest and, in the case of the bog-snorkellers, quite possibly the most soggy.

And they are among the latest wacky wonders to find a place in the 2012 edition of Guinness World Records.

Most skipping dogs on one rope: The 13 mutt marvels of the Super Wan Wan Circus

Most pots made in an hour: Mark Byles, of Kent, managed 150

From Japan, the 13 hounds of the Super Wan Wan Circus have earned plaudits - and the admiration of schoolgirls everywhere - for achieving the most dogs skipping on the same rope.

Not to be outdone by the mutts, meet Stewie, at 48 (and a half) inches the world's longest domestic cat.

In the world of human endeavour, the Guinness collection features student Chanel Tapper, 21, from California, whose 3.8in tongue is the longest on the planet (for a human female).

Largest pizza: Tristan Agakhanyan (left) and Michael Kocabay (right) sit in front of this 54-incher that costs £121 and feeds up to 100 people

Bizarre: Chanel Tapper has the world's longest female tongue which measures 3.8in from tip to top lip, while Christine Walton has the world's longest nails at 10ft 2in on her left hand and 9ft 7in on the right

Fastest bog-snorkelling triathlon: Daniel Bent did it in 2hrs 21mins, his sister Natalie in 2hrs 45mins

Christine Walton, 45, from Las Vegas, has the longest fingernails, 10ft 2in on her left hand and 9ft 7in on her right, and Aevin Dugas, 36, from New Orleans, boasts the largest natural afro, with a circumference of 4ft 4in.

One record guaranteed to wreck a hairstyle, no matter its size, is the bog-snorkelling triathlon, which involves the running and cycling of a normal triathlon – plus a swim in a peat bog.

Another record is that of Mark Byles, of Aylesford, Kent, whose feat is to have made 150 ceramic pots in just an hour.

British brother and sister pair Daniel and Natalie Bent are the world’s fastest.

It costs £121 from Big Mama’s and Papa’s Pizzeri in Los Angeles, feeds 100 people and, yes, the restaurant does deliver. 

And if reading about all this record-breaking has worked up your appetite, the largest commercially available pizza is a belt-busting 54in wide.

Record breakers: Aevin Dugas has the world's largest Afro, measuring 4ft 4in all the way around, while Stewie the cat is the planet's longest at 48.5in