Jobs for Andalites on Earth:
I: Food and drink testers.
II: Lawn mowers, with their feet!
III: Chopping down trees with their tails.
IV: Anything for which morphing is useful (Search and rescue, pursuit of criminals as morphed dogs, repairs in difficult and small locations, ocean exploration, getting the females of endangered species pregnant, production of organs by morphing the person who needs the organs, then having those organs removed, then demorphing; etc).