Did you know? Crocodiles hold the record for the heaviest reptiles on the planet today, reaching up to 1,200 kg (2,645 lb) – around the same as two small cars. 🚗🚗

But as you’ll see in our awesome new trailer for Guinness World Records 2020 - modern day crocodiles are tiny compared to the ones that were alive millions of years ago...

See if you can spot the colossal croc 👇👀🐊

Did you know? Some saltwater crocodiles can grow 7m (22 ft 11 in) long from snout to tail. Wow! 📏

The largest crocodile in captivity is Cassius (c. 100 years old), who measures 5.48 m (17 ft 11 in) – the equivalent of two ping-pong tables laid end to end. He resides at Marineland Melanesia wildlife park. The park is located on Green Island, which sits in the Great Barrier Reef – the world's longest reef

Cassius is named after Cassius Clay – the birth name of iconic boxer Muhammad Ali 

The largest crocodile in captivity ever outsized even Cassius. Lolong lived up to his name with a total length of 6.17 m (20 ft 3 in). He sadly passed away in 2013. 

However, if you think saltwater crocs are massive, wait till you hear about one of their ancient ancestors… 😨


The terrifying Sarcosuchus imperator (pronounced sar-co-sue-cuss) is estimated to have been 12.2 m (40 ft) long and 8 tonnes (17,600 lb). That made this colossal croc double the length of Lolong and around 7.5 times his weight. It’s little wonder that this mega-predator is sometimes dubbed “super-croc”. 

Calculating the size of long-extinct creatures can be tricky, but these sizes are based on a Sarcosuchus skeleton that was excavated in Africa. 

Excavate: to dig out material, in this case digging in the ground to find the skeleton. ☠🦕

A Sarcosuchus skeleton on display at the National Museum of Natural History in Paris, France

Sarcosuchus lived 112 million years ago, the same time as Spinosaurus (pronounced spine-oh-saw-us) the largest carnivorous dinosaur who you may have seen in Jurassic World. 📺 🦕🦖

Sarcosuchus is actually a crocodyliform (pronounced croc-oh-dil-eh-form), not a crocodile, which explains the record for largest crocodyliform ever

The 'snapshot' about the largest crocodyliform ever is one of eight such features that appear in the new GWR 2020 book

We know that it can be hard to wrap your head around the size of certain records… particularly our larger-than-life ones! To help with that, in Guinness World Records 2020 (out in early September 2019), we have gathered some of the most mind-boggling records and relocated them to the UK capital – the home of Guinness World Records' head office for 65 years. 

The 'snapshot' features in GWR 2020 compare some of our super-sized record holders with iconic London landmarks