I love penguins!
Have you ever seen a penguins feet? They’re not very bug compared to their bodies, this makes it hard for them to walk, especially on ice. They cant fly either, so they slide! I guess it’s the same as if you lived in a place with snow and ice but had a sledge then you’d pick that to slide around on rather than try to walk wouldn’t you?! Much faster and easier (and probably more fun!)