A recently discovered prehistoric snake going by the
Kaiju-worthy name
Titanoboa was estimated to be at 'least 43 feet long, weighed 2,500 pounds (1,140 kg) and its massive body was at least 3 feet (1 meter) wide'.
Godzilla could slurp the punk up like spaghetti but it sounds like a worthy opponent for King Kong, at least.
http://www.newsdaily.com/stories/tre51346p-us-snake-giant/