The first time the cat vanishes Kurt freezes, stunned. He just barely manages to yank his tail out of the way in time, eyes still wide.

"What in the world are you," he murmurs, obviously not expecting any kind of answer because this is a cat. Which teleports, and gives him a wicked idea. The next time the feline lunges Kurt teleports himself a foot away, vanishing and reappearing in puffs of smoke.