Welcome to MK9 International
Services
K9 DOGS
• We prepare dual-purpose K9s for police and military applications.
• Grip work is built through systematic training on the sleeve and full suit.
• Muzzle training follows strict operational and safety standards.
• Play drive is enhanced through structured work with the Kong and Teflon piece.
• Depending on the client’s request: detection of objects (human scent), poison, narcotics, or explosives.
DETECTION
• We introduce both the dog and the handler to structured scent work.
• Food and play motivation are combined to build a strong and reliable search behavior.
• Our primary focus lies on object searches such as burglary tools, keys, or cartridge cases.
• Several of our pre-trained dogs have already proven themselves in active police service — we take pride in their work and their service to society.
PROTECTION
• We provide targeted training for dogs and handlers in various protection disciplines such as IGP, Ringsport, and KNPV.
• Our work focuses on refining grip behavior and teaching handlers precise communication timing during each phase of training.
• One of the leading influences in this field is Dr. Helmut Raiser, known for his groundbreaking concept of balancing prey and aggression drives in protection work.
HOUSE DOGS
• At MK9 International, we believe that every dog should work with heart and soul (Bart Bellon).
• Our foundation lies in building solid everyday obedience – sit, down, recall, leash manners, and the release command.
• We prepare teams for the companion dog test by breaking each exercise into small, structured steps to ensure clarity and motivation.
• Problem behaviors are analyzed and improved using the four quadrants of learning theory.
• The marker or clicker act as powerful secondary reinforcers within a well-planned training system.
• Through shaping, dogs learn to think and solve problems on their own – expanding their potential far beyond mechanical repetition. Marker and clicker work hand in hand (Karen Pryor).
DOG LICENSE
We offer the official dog handler license test (NHundG – Lower Saxony), including both the theory and practice exams.
As required by § 3 NHundG, all first-time dog owners must demonstrate proof of competence — theory before owning a dog, and practice within the first year of ownership.
ABOUT US
My name is Mario Krajina. I was born in Bremen, hold Croatian citizenship, and am a passionate hunter.
I am a certified dog trainer by the Veterinary Chamber of Lower Saxony and the head of MK9 International in Germany.
Together with my brother-in-law, I have successfully managed A1 Getriebe- & Autoservice GmbH, where I am responsible for the commercial management.
My passion for performance, precision, and structure is deeply reflected in my work with dogs.
Since 2014, I have been fully committed to the field of dog sports, where it quickly became evident that I am an exceptional decoy and trainer, able to read, understand, and develop dogs with accuracy and intuition.
I have trained alongside top KNPV trainers and champions in the Netherlands, many of whom are consistently ranked among the top five competitors.
Working at this high level has shaped my skills as a decoy and trainer and significantly broadened my professional perspective in a very short time.
Through dedication and close collaboration, I was repeatedly invited to settle in the Netherlands to continue training dogs professionally at the highest standard.
A special thank-you goes to my wife, Ilijana Krajina, who shares the same passion, supports me during training, and is truly indispensable.
She continues to stand by my side and support me in everyday business life — something I am deeply grateful for.
Our Dogs in Service
• Arrestatieteam (Netherlands) – one of Europe’s leading special units
• Dutch Police – Team Surveillance Dog Units of North Holland, Central Netherlands, and Rotterdam
• German Armed Forces – Special Forces Command (KSK), Air Force, and Military Police (Feldjäger)
• German Police
Professional Certifications and Authorizations
APPROVALS AND CERTIFICATIONS BY THE VETERINARY AUTHORITIES:
• Official authorization in accordance with § 11 (1) Nos. 8 a, b, f and 6 of the German Animal Welfare Act (TierSchG)
• Recognition to conduct theoretical and practical dog handler examinations under the NHundG (Lower Saxony Dog Law)
• Certified dog trainer recognized by the Veterinary Chamber of Lower Saxony
ADDITIONAL QUALIFICATIONS AND LICENSES:
• Certificate of competence in accordance with § 11 (1) Nos. 3, 5, 6, 8 a, f of the German Animal Welfare Act (TierSchG)
• Authorization for the transport of dogs within the European Union (EU)
• Certificate of competence under § 10 LHundG NRW (Dog Law of North Rhine-Westphalia)
• NePoPo® Gold Graduate
• Certificate of competence according to § 34a (1) Sentence 5 GewO (German Trade Regulation Act – Security Industry)