You have to seem them to believe that these huge animals really exist! From salt water crocodiles to freakishly huge rodents (that would undoubtedly scare your mom if you bring it as a pet) - these animals are huge for their specie standards and some are quite rare or almost extinct!

See the link below for the video! (Credits to MindChop)

https://www.youtube.com/watch?v=bYDgW2ui8-U