How does your cat respond if you whistle? I have 5 cats, 2 are my rescue brother and sister that will be a year old in May. I found that the 2 little ones dont like it if anyone whistles, my mom has their 2 brothers and they dont like it either, they run like theres a monster coming out of you when they hear it...lol. I did find how it helps me though, the boy insists on jumping on the kitchen counter so when i see him up there i whistle and he's jumping up there less and less. so are my kitties the only ones afraid of whistling?