I’m not sure how this prevents dog theft. If I steal your dog couldn’t I just make a noseprint of him and claim I had it all the time?

DOGS NOW NOSEPRINTED TO PROVE OWNERSHIP
Taking noseprints of dogs to guard them against loss or theft is the method being adopted by western owners. When two persons claim the same dog in court, ink noseprints, like the specimen illustrated, settle the matter. Like human fingerprints, the patterns on the nose of the dog are said not to change with age, and therefore a pet need submit but once to having its nostrils smeared with ink. No two dogs have identical patterns so a mistake is impossible.

Poor dog. Do vets still do this?

DOGS BARK TONED DOWN BY OPERATION
Toning down the barking of noisy dogs is the reported accomplishment of an Atlanta, Ga., veterinarian, who has performed the feat upon the pets of a number of apartment dwellers. In the simple, painless operation that he has devised, a dog’s vocal cord is relieved of a small V-shaped wedge on either side. No danger to the animal is involved, it is said, and the only after effect is that an ear-splitting bark is muffled to a dulcet tone that can cause no complaints from neighbors. In the photo at left, a pet is under treatment.