Ash: "What kind of Pokemon is that? I've never seen that one before."

PokeDex: "It's a Ninetales. Go and pet it."

XD ...For our sanity, don't pet it, Ash... 

If you don't understand that, what it means is the following...

Upon touching one of Ninetales tails, you get a one thousand year curse or something like that. I don't remember how long the curse lasts, but I do know that there is a curse.