As humans, why did this trait evolve? Are other animals ticklish? Does ticklishness serve any useful purpose to us as a species?
I know that chimps are definitely ticklish (having been a zookeeper after college), but as to why? No idea. But I want to find out.
For calling attention to scorpions crawling on unseen parts of our bodies.
And yes, animals are ticklish. Try tickling the toe-pads of a dog or cat, but be ready to yank your hand back before it gets chomped or scratched!
My dog is ticklish. And I think I might be the most ticklish creature in the world.
We usually feel extremely small.