"And I suppose with this Earth as it is, there are many fewer," he says with real regret.

"Humans also make milk," he observes, taking the spoon with exaggerated care. Human hands are a bit clumsy by his standards and it would be easy to spill the combined fluid. "Andalites have a rough equivalent. Do you want to be thanked? I don't think I do. It was a particular effort and difficulty, but it was also quite a long time ago."

He puts the spoon in his mouth and makes a little noise down in his throat. It's approved, apparently.