Pet owners in New Jersey can now learn if any staff is on hand if their animals are left overnight at a veterinarian's office.

Lt. Gov. Kim Guadagno signed "Betsy's Law" during a ceremony Tuesday in Toms River. Guadagno is serving as acting governor while Gov. Chris Christie travels out of state in his campaign for the Republican presidential nomination.

The law is named after a Rottweiler who accidentally strangled herself during an overnight stay at a vet's office. Betsy's owners hope the lawyer will prevent that from happening again.