my cat Seanna is 5.5 yrs old and she sucks my hand a nd sometimes my face when i'm in bed. it is because the kitten was taken away or abandoned. Funny enough, Seanna will only listen to my husband but not me and will cuddle up to both of us and nibble on me . She'll nibble on my hubby but not that often. Maybe because of the sex of the creature i dunno?