Answer:
Iron on a mammal. Mammal on your feet.
What is often returned but is never borrowed?
A precious stone, as clear as diamond. Seek it out while the sun's near the horizon. Though you can walk on water with its power, try to keep it, and it'll vanish in an hour.
I can be used to type and point you see. But don't forget, you can count on me. What am I?
Hard to catch, easy to hold. Can't be seen, unless it's cold
The warmer I am the fresher I am.