Dog owners know well that there are certain places where if you scratch them the old back leg starts thumping up and down- whether that is classed as a tickle or not I am not sure!
Yep, i will gently tickle the fur between the pads on my dogs and cats feet and whether they are awake or asleep their feet twitch and thump about as if it tickles so i would say dogs and cats have ticklish feet.
I dont find being tickled funny, the laughing bit is just a natural responce!
I tend to get more annoyed and violent when people tickle me because i can not stand it!!