Ok, dusting off and old one here. So, it looks like Zoochatters hate it when people howl at captive wolves, right? In 2008/2009, me and my family had just moved to Arizona and we went up north with some friends to Out of Africa. After the show at the Tiger Splash arena, I (who was 7 or 8 at the time) went to get a closer look at the Spotted Hyenas, who I had never seen in-person before, with my younger sister (who couldn't have been older than 5) and two of her friends.
One of the hyenas was right at the fence, and then, for some reason, my sister and her two friends started
howling at it! Naturally, the hyena didn't take too kindly to being howled at, and growled in annoyance. Thankfully, I stepped in and broke things up, leading my sister and her friends away from the hyena enclosure before things got nasty.
It didn't annoy me in the moment (I'm annoyed in retrospect), but it sure annoyed the hyena

.