I wanted to get HP EVs for my Sylveon, but I accidentally beat a Bunnelby. I wanted to check what EV yield they had so I knew which berry to use, but it didn't have any info. Can you please help me?
And they didn't have information for any of the other new Pokemon in Kalos. Help!
Bunnelby gives one EV in speed.
So this means you should feed your Sylveon one Tamato berry, and it should go back to normal again.
Source (Chespin onwards)
Hope I helped!