55.18 TAMPERING WITH A RABIES VACCINATION TAG.  
It is unlawful to tamper with a rabies vaccination tag.
(Code of Iowa, Sec. 351.45)
1.   A person commits the offense of tampering with a rabies vaccination tag if all of the following apply:
   A.   The person knowingly removes, damages, or destroys a rabies vaccination tag as described in Section 351.35 of the Code of Iowa.
   B.   The rabies vaccination tag is attached to a collar worn by a dog, including as provided in Sections 351.25 and 351.26 of the Code of Iowa.
2.   This section shall not apply to an act taken by any of the following:
   A.   The owner of the dog, an agent of the owner, or a person authorized to take action by the owner.
   B.   A peace officer.
   C.   A veterinarian.
   D.   An animal shelter or pound.