Semantics

cheek
Почему у ребёнка такие бледные щёки? Why are the child's cheeks so pale?
jowl
На щеках волчат выросли баки. Whiskers had grown on the wolf cubs' jowls.
This entry is primarily concerned with the use of the Russian word щека denoting human cheeks. It may also refer to the jowls of animals. No specific words or expressions exist for the cheeks of animals; common sense will dictate which of the expressions cannot be used to refer to animals. When speaking of pets, for example, some of the expressions for human cheeks can be used, if the general shape of the animal's face suggests such usage; it is not uncommon, for example, to refer to щека when speaking of certain kinds of dogs.