Ah, you got one of the cute ones! Hehe, but they also tend to be one of the more mischievous species, as their name implies. So that's definitely something to be aware of, especially since that mischievousness usually manifests by way of scaring the crap out of people.

[His voice never loses its chipper, enthusiastic tone.]

But that actually serves a purpose, aside from just being fun for them I guess. See, they feed off of fear. [He gestures to his neck.] With those little pearl things. But you can feed them normal food too, just like you would any other Pokémon. So I wouldn't advise discouraging it from trying to scare people and Pokémon but you might want to set some boundaries with it.