How fast can the snail move?

The fastest moving land snail, the common garden snail, can move at 0.032 mph.

Animal that is immune to every known disease

Sharks apparently are the only animals that never get sick. As far as is known, they are immune to every known disease including cancer.

A sentence that contains every letter in the alphabet.

The sentence "The quick brown fox jumps over the lazy dog." contains every letter in the alphabet. It was developed by Western Union to Test telex/twx communications.