30 Of The Most Difficult Dog Breeds To Train

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German Shepherds

Source: https://www.insidedogsworld.com/

These dogs are intelligent and handsome. Mostly used as police dogs or military dogs. The problem is that they are extremely loyal and over-protective, and will bite or attack strangers and other dogs. Leash training is effective. Make sure they get plenty of exercise. Always use positive reinforcement. They can be your best friend for life. Many “police-dogs” often saved the lives of their human-partners. At times, at the cost of their own lives.