"Why are you rubbing peanut butter in your hair for?" asks the reptiless "Let's just go, shall we?"
Once the ship has taken off, the reptiless tells you that her name is Crellna. "Why do you need a human for anyway? We've mammals. Wouldn't you be better with a reptile?"
"That is a very intelligent question" replies Crellna with a smile "We selected humans because they are the most compatible for our mating needs. As for the mammal thing, we will sort that out with our next stop."
"Why?" you ask "Where are we going?"
"Not where, but when!" replies Crellna grinning. "We have time travel capabilities. We will travel back to your planet's past, collect dinosaur DNA and infuse you with it."
"I'll become a dinosaur?" you gasp.
"You'll be an anthro, like me. And don't worry, it'll only be temperary. You'll be returned to your normal human form."