"It's unusual to the extreme," Thace says agreeably. "And yes. If you've met him here, Keith from our world has a human father. Some hybrids do take incredibly strongly after one parent species or the other, so I don't believe he had any changes to his body like you or I did."

It's, well, seen as weak, but there's no one around to judge, so Thace bunts into the contact, seeking more even if there really isn't anywhere left to groom that doesn't involve removing clothing.