My 11-month-old Dalmatian has become aggressive towards younger and submissive dogs. He has been around a lot of dogs since we got him five months ago, but this behavior is new. Why is this happening?


Some male dogs, especially if they are neutered, will become aggressive in the way you described as they reach that age. You can call him off and "down" him so that he will calm down, but do not yell at him or hit him for his behavior. If he isn't neutered, do so. If he is not obedience trained well enough to "down," even when he is excited, you need to work on his obedience.

Updated on March 10, 2018

Original Article:

7 Easy Ways to Train a Dog to Get Along With Other Dogs
By Dr Mark