For example, Raticate uses Super Fang on an opponent. The HP goes down to half. The Raticate uses Super Fang again. Will Super Fang fail? I've been told you can't use Super Fang again once the HP is down to half.
Using super fang cut the opponent hp in half every time
Ex. If a Pokemon has 100 HP and you use super fang it drops to 50 HP and if you use it again it drops to 25 HP