I had one that use to suckle my hair. Up underneath in the back. I always had a wet chunk of hair. I had another who slept in my hair. He would knead and knead until he was happy with his nest and then curl up and sleep. If I rolled over during the night he had to go through the whole thing again when digging his claws into my head to hold it still didn't work. LOL good thing he was tiny and the guy he went to had no hair to speak of.