Napper

A napper is anyone who naps someone or something that does not belong to them
Nap is slang for stealing or taking without permission

Definition of Napper : anyone who takes a person or thing without permission

Napping victim : Dingo took my baby it (napped) it right off the porch

Police officer : ma’am you expect me to believe that a dingo came from out of nowhere and (napped) your baby
Napping victim : officer you have to believe me my baby was (kidnapped) by that damn dingo it took my baby