Misc: what class of animals makes up more than two thirds of all known species?

Questions

Although Cleopatra was meant to have died after a bite from an ____, the species does not exist in Egypt?

The 'Alligator Pear' is better known as the?

Snails can sleep for _____ without eating?

An Elephant's trunk can hold over _____ litres of water?

The largest shark ever caught with a rod was just less than ______ feet long?