How do you feel your favourite animal would react if you tickled it's bum with a feather?

Startled, offended, aroused, mildly amused or a different response altogether? I mean, there’s no way of knowing, which way we are going….oops, Willy Wonka just popped into my head, do forgive me. So yeah, tickling wildlife….will it ever catch on? No animals were hurt or mistreated at the time of this questions birth =0)