Blindseer

Just beat the first gym leader Brock with a Squirtle. The Squirtle started at level 15 when fighting Onix, and was level 17 after beating him. At level 16 Squirtle was supposed to learn Bite, but I was not given the option of doing so. I'm not entirely sure if this is a problem with all Pokemon or just Squirtle though someone did mention that it also happened to their Pikachu so I'm assuming it affects all Pokemon.