You either have to get it at a certain level where it will automaticaly learn Hyper Fang, or buy it at the poke store. It will be called HM or TM something
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It might be somewere inbeetween lvl 14 and lvl 25
Rattata does not learn Mean Look.
rattata does not learn bubble at all, there isn't even a TM for bubble
No, it is not able to learn cut.
Level 13.