This Russian dog helped solve around 1,500 crimes!

"He should have been called ‘Sherlock Holmes’ or ‘Pinkerton’," said journalist Vlas Doroshevich of the most famous police dog of the Russian Empire, ‘Tref’ the Doberman Pinscher.

In 1909, ‘Tref’ graduated with honors from the St. Petersburg Service Dog Kennel and immediately began his work. His first case was the murder of a wealthy peasant named Grishaev. The dog sniffed the victim's body, then found a bloodstained rag in a manure pile, which the killer had used to wipe his hands. Picking up the scent, he led police to a neighboring village, directly to the house where the murderer had spent the night. It turned out there were three criminals. ‘Tref’ led the officers along their trail for about 100 kilometers until they were apprehended with the victim's belongings.

The dog caught not only criminals, but also actual terrorists. One day, he dug up a barrel of explosives and bomb parts in a garden near the suspects' house.

‘Tref’ became the subject of newspaper articles and, in the criminal underworld, he was dubbed ‘hellhound’. As soon as word got out that he was heading to a certain city, criminal activity there would instantly grind to a halt.

In Spring 1917, he unsuccessfully searched for Lenin, whom authorities suspected of spying for Germany. Two years later, however, ‘Tref’ did the "leader of the world revolution" a favor by tracking down the robbers who had attacked his car.

In the 1920s, ‘Tref’ retired from active duty after his owner, Vladimir Dmitriev, was executed for embezzlement and he refused to work with anyone else. The dog was used as a stud and many of his offspring went on to excel in the service. The most outstanding among them was ‘Ber’, who solved 65 crimes in just a couple of years.