The image is of someone stepping onto another person's feet. Figuratively, it means overstepping your bounds, doing something that is actually someone else's job.
"Standing on someone's toes" just means that your foot is on top of theirs. "Stepping on someone's toes," however, refers to the idea that you are stepping in on their territory and taking over something that belongs to them (either in reality, or just in their minds."
It means that tatatatata toes as in "the toes"
Toes are the digits on the end of your foot. They help with balance, walking, and providing stability. Humans typically have five toes on each foot.
doing something in a way that somehow hinders and irritates
Do you mean toes or feet? or both...
If you mean Rhinoceros, they have three toes on each hoof
It means to be ready for anything. You can move faster from your toes than if you are flat footed.
Yes, the word polydactyly does mean many fingers and toes in Greek.
intelligence
these people
Because we're just a step above the apes?
In a literal way, it's another (better) way of saying to squeeze your toes so they bend down (curl up), instead of laying flat.Figuratively, it's an idiom that basically means either feeling very uncomfortable because of embarrassment or super excited. It can really go either way; it depends on the context it is used in.